diff --git a/public/_server/table/comment.js b/public/_server/table/comment.js
index a2e36f0..06bfb80 100644
--- a/public/_server/table/comment.js
+++ b/public/_server/table/comment.js
@@ -706,7 +706,7 @@ var comment_c456ea59_6018_45ef_8bcc_211a24c627dc = {
 							"_type": "material",
 							"_directory": "./project/bgms/",
 							"_transform": (function (one) {
-								if (one.endsWith('.mp3') || one.endsWith('.ogg') || one.endsWith('.wav') || one.endsWith('.m4a') || one.endsWith('.flac'))
+								if (one.endsWith('.mp3') || one.endsWith('.ogg') || one.endsWith('.wav') || one.endsWith('.m4a') || one.endsWith('.flac') || one.endsWith('.opus'))
 									return one;
 								return null;
 							}).toString(),
diff --git a/public/_server/table/data.comment.js b/public/_server/table/data.comment.js
index 4f2e0fe..6741684 100644
--- a/public/_server/table/data.comment.js
+++ b/public/_server/table/data.comment.js
@@ -154,7 +154,7 @@ var data_comment_c456ea59_6018_45ef_8bcc_211a24c627dc = {
 					"_type": "material",
 					"_directory": "./project/bgms/",
 					"_transform": (function (one) {
-						if (one.endsWith('.mp3') || one.endsWith('.ogg') || one.endsWith('.wav') || one.endsWith('.m4a') || one.endsWith('.flac'))
+						if (one.endsWith('.mp3') || one.endsWith('.ogg') || one.endsWith('.wav') || one.endsWith('.m4a') || one.endsWith('.flac') || one.endsWith('.opus'))
 							return one;
 						return null;
 					}).toString(),
diff --git a/public/project/bgms/beforeBoss.mp3 b/public/project/bgms/beforeBoss.mp3
deleted file mode 100644
index 46371cc..0000000
Binary files a/public/project/bgms/beforeBoss.mp3 and /dev/null differ
diff --git a/public/project/bgms/beforeBoss.opus b/public/project/bgms/beforeBoss.opus
new file mode 100644
index 0000000..531c4cd
Binary files /dev/null and b/public/project/bgms/beforeBoss.opus differ
diff --git a/public/project/bgms/beforeNight.mp3 b/public/project/bgms/beforeNight.mp3
deleted file mode 100644
index 9943d55..0000000
Binary files a/public/project/bgms/beforeNight.mp3 and /dev/null differ
diff --git a/public/project/bgms/beforeNight.opus b/public/project/bgms/beforeNight.opus
new file mode 100644
index 0000000..e277af4
Binary files /dev/null and b/public/project/bgms/beforeNight.opus differ
diff --git a/public/project/bgms/cave.mp3 b/public/project/bgms/cave.mp3
deleted file mode 100644
index 465e5e6..0000000
Binary files a/public/project/bgms/cave.mp3 and /dev/null differ
diff --git a/public/project/bgms/cave.opus b/public/project/bgms/cave.opus
new file mode 100644
index 0000000..0910563
Binary files /dev/null and b/public/project/bgms/cave.opus differ
diff --git a/public/project/bgms/chapter2ED.mp3 b/public/project/bgms/chapter2ED.mp3
deleted file mode 100644
index 1436bd0..0000000
Binary files a/public/project/bgms/chapter2ED.mp3 and /dev/null differ
diff --git a/public/project/bgms/chapter2ED.opus b/public/project/bgms/chapter2ED.opus
new file mode 100644
index 0000000..fba6aa1
Binary files /dev/null and b/public/project/bgms/chapter2ED.opus differ
diff --git a/public/project/bgms/escape.mp3 b/public/project/bgms/escape.mp3
deleted file mode 100644
index ed8695f..0000000
Binary files a/public/project/bgms/escape.mp3 and /dev/null differ
diff --git a/public/project/bgms/escape.opus b/public/project/bgms/escape.opus
new file mode 100644
index 0000000..544413d
Binary files /dev/null and b/public/project/bgms/escape.opus differ
diff --git a/public/project/bgms/escape2.mp3 b/public/project/bgms/escape2.mp3
deleted file mode 100644
index 41ed079..0000000
Binary files a/public/project/bgms/escape2.mp3 and /dev/null differ
diff --git a/public/project/bgms/escape2.opus b/public/project/bgms/escape2.opus
new file mode 100644
index 0000000..3e2c0dc
Binary files /dev/null and b/public/project/bgms/escape2.opus differ
diff --git a/public/project/bgms/grass.mp3 b/public/project/bgms/grass.mp3
deleted file mode 100644
index 15d5624..0000000
Binary files a/public/project/bgms/grass.mp3 and /dev/null differ
diff --git a/public/project/bgms/grass.opus b/public/project/bgms/grass.opus
new file mode 100644
index 0000000..a2f20f3
Binary files /dev/null and b/public/project/bgms/grass.opus differ
diff --git a/public/project/bgms/mount.mp3 b/public/project/bgms/mount.mp3
deleted file mode 100644
index 9b84f7a..0000000
Binary files a/public/project/bgms/mount.mp3 and /dev/null differ
diff --git a/public/project/bgms/mount.opus b/public/project/bgms/mount.opus
new file mode 100644
index 0000000..8e29152
Binary files /dev/null and b/public/project/bgms/mount.opus differ
diff --git a/public/project/bgms/night.mp3 b/public/project/bgms/night.mp3
deleted file mode 100644
index 6fccd56..0000000
Binary files a/public/project/bgms/night.mp3 and /dev/null differ
diff --git a/public/project/bgms/night.opus b/public/project/bgms/night.opus
new file mode 100644
index 0000000..eafb30b
Binary files /dev/null and b/public/project/bgms/night.opus differ
diff --git a/public/project/bgms/palaceCenter.mp3 b/public/project/bgms/palaceCenter.mp3
deleted file mode 100644
index 53c91a4..0000000
Binary files a/public/project/bgms/palaceCenter.mp3 and /dev/null differ
diff --git a/public/project/bgms/palaceCenter.opus b/public/project/bgms/palaceCenter.opus
new file mode 100644
index 0000000..a110922
Binary files /dev/null and b/public/project/bgms/palaceCenter.opus differ
diff --git a/public/project/bgms/palaceNorth.mp3 b/public/project/bgms/palaceNorth.mp3
deleted file mode 100644
index fb538d4..0000000
Binary files a/public/project/bgms/palaceNorth.mp3 and /dev/null differ
diff --git a/public/project/bgms/palaceNorth.opus b/public/project/bgms/palaceNorth.opus
new file mode 100644
index 0000000..75b9bc6
Binary files /dev/null and b/public/project/bgms/palaceNorth.opus differ
diff --git a/public/project/bgms/palaceSouth.mp3 b/public/project/bgms/palaceSouth.mp3
deleted file mode 100644
index 8d84bbc..0000000
Binary files a/public/project/bgms/palaceSouth.mp3 and /dev/null differ
diff --git a/public/project/bgms/palaceSouth.opus b/public/project/bgms/palaceSouth.opus
new file mode 100644
index 0000000..5fd4817
Binary files /dev/null and b/public/project/bgms/palaceSouth.opus differ
diff --git a/public/project/bgms/plot1.mp3 b/public/project/bgms/plot1.mp3
deleted file mode 100644
index 9819dd0..0000000
Binary files a/public/project/bgms/plot1.mp3 and /dev/null differ
diff --git a/public/project/bgms/plot1.opus b/public/project/bgms/plot1.opus
new file mode 100644
index 0000000..ca10500
Binary files /dev/null and b/public/project/bgms/plot1.opus differ
diff --git a/public/project/bgms/road.mp3 b/public/project/bgms/road.mp3
deleted file mode 100644
index 1acbabc..0000000
Binary files a/public/project/bgms/road.mp3 and /dev/null differ
diff --git a/public/project/bgms/road.opus b/public/project/bgms/road.opus
new file mode 100644
index 0000000..b9971c6
Binary files /dev/null and b/public/project/bgms/road.opus differ
diff --git a/public/project/bgms/title.mp3 b/public/project/bgms/title.mp3
deleted file mode 100644
index 87dd620..0000000
Binary files a/public/project/bgms/title.mp3 and /dev/null differ
diff --git a/public/project/bgms/title.opus b/public/project/bgms/title.opus
new file mode 100644
index 0000000..8edb168
Binary files /dev/null and b/public/project/bgms/title.opus differ
diff --git a/public/project/bgms/tower.mp3 b/public/project/bgms/tower.mp3
deleted file mode 100644
index 76b28d5..0000000
Binary files a/public/project/bgms/tower.mp3 and /dev/null differ
diff --git a/public/project/bgms/tower.opus b/public/project/bgms/tower.opus
new file mode 100644
index 0000000..ccb6221
Binary files /dev/null and b/public/project/bgms/tower.opus differ
diff --git a/public/project/bgms/towerBoss.mp3 b/public/project/bgms/towerBoss.mp3
deleted file mode 100644
index 1e2b0ac..0000000
Binary files a/public/project/bgms/towerBoss.mp3 and /dev/null differ
diff --git a/public/project/bgms/towerBoss.opus b/public/project/bgms/towerBoss.opus
new file mode 100644
index 0000000..9fde0db
Binary files /dev/null and b/public/project/bgms/towerBoss.opus differ
diff --git a/public/project/bgms/towerBoss2.mp3 b/public/project/bgms/towerBoss2.mp3
deleted file mode 100644
index d1da650..0000000
Binary files a/public/project/bgms/towerBoss2.mp3 and /dev/null differ
diff --git a/public/project/bgms/towerBoss2.opus b/public/project/bgms/towerBoss2.opus
new file mode 100644
index 0000000..483586c
Binary files /dev/null and b/public/project/bgms/towerBoss2.opus differ
diff --git a/public/project/bgms/towerBoss3.mp3 b/public/project/bgms/towerBoss3.mp3
deleted file mode 100644
index f51e6a0..0000000
Binary files a/public/project/bgms/towerBoss3.mp3 and /dev/null differ
diff --git a/public/project/bgms/towerBoss3.opus b/public/project/bgms/towerBoss3.opus
new file mode 100644
index 0000000..31a273a
Binary files /dev/null and b/public/project/bgms/towerBoss3.opus differ
diff --git a/public/project/bgms/winter.mp3 b/public/project/bgms/winter.mp3
deleted file mode 100644
index 4b9df8e..0000000
Binary files a/public/project/bgms/winter.mp3 and /dev/null differ
diff --git a/public/project/bgms/winter.opus b/public/project/bgms/winter.opus
new file mode 100644
index 0000000..7e8a13a
Binary files /dev/null and b/public/project/bgms/winter.opus differ
diff --git a/public/project/bgms/winterTown.mp3 b/public/project/bgms/winterTown.mp3
deleted file mode 100644
index 35237af..0000000
Binary files a/public/project/bgms/winterTown.mp3 and /dev/null differ
diff --git a/public/project/bgms/winterTown.opus b/public/project/bgms/winterTown.opus
new file mode 100644
index 0000000..9146a3c
Binary files /dev/null and b/public/project/bgms/winterTown.opus differ
diff --git a/public/project/data.js b/public/project/data.js
index 2b9711c..84f63d2 100644
--- a/public/project/data.js
+++ b/public/project/data.js
@@ -194,25 +194,26 @@ var data_a1e2fb4a_e986_4524_b0da_9b7ba7c0874d =
 		],
 		"bgms": [
 			"beforeBoss.opus",
-			"cave.mp3",
-			"escape.mp3",
-			"escape2.mp3",
-			"grass.mp3",
+			"beforeNight.opus",
+			"cave.opus",
+			"chapter2ED.opus",
+			"escape.opus",
+			"escape2.opus",
+			"grass.opus",
 			"mount.opus",
-			"night.mp3",
-			"output6.ogg",
-			"palaceCenter.mp3",
-			"palaceNorth.mp3",
-			"palaceSouth.mp3",
-			"plot1.mp3",
-			"road.mp3",
-			"title.mp3",
-			"tower.mp3",
-			"towerBoss.mp3",
-			"towerBoss2.mp3",
-			"towerBoss3.mp3",
-			"winter.mp3",
-			"winterTown.mp3"
+			"night.opus",
+			"palaceCenter.opus",
+			"palaceNorth.opus",
+			"palaceSouth.opus",
+			"plot1.opus",
+			"road.opus",
+			"title.opus",
+			"tower.opus",
+			"towerBoss.opus",
+			"towerBoss2.opus",
+			"towerBoss3.opus",
+			"winter.opus",
+			"winterTown.opus"
 		],
 		"sounds": [
 			"008-System08.ogg",
@@ -356,7 +357,7 @@ var data_a1e2fb4a_e986_4524_b0da_9b7ba7c0874d =
 			"首饰",
 			"首饰"
 		],
-		"startBgm": "title.mp3",
+		"startBgm": "title.opus",
 		"styles": {
 			"floorChangingStyle": " ",
 			"statusBarColor": [
diff --git a/public/project/floors/MT0.js b/public/project/floors/MT0.js
index 125d472..429d456 100644
--- a/public/project/floors/MT0.js
+++ b/public/project/floors/MT0.js
@@ -120,7 +120,7 @@ main.floors.MT0=
     "width": 15,
     "height": 15,
     "autoEvent": {},
-    "bgm": "cave.mp3",
+    "bgm": "cave.opus",
     "beforeBattle": {},
     "bg2map": [
 
diff --git a/public/project/floors/MT1.js b/public/project/floors/MT1.js
index 948d15c..e26b325 100644
--- a/public/project/floors/MT1.js
+++ b/public/project/floors/MT1.js
@@ -12,7 +12,7 @@ main.floors.MT1=
     "images": [],
     "ratio": 1,
     "defaultGround": "T331",
-    "bgm": "cave.mp3",
+    "bgm": "cave.opus",
     "firstArrive": [
         "\t[原始人]不知为何，最近这些蝙蝠的攻击性变得很强，而且还不知道从哪冒出来了这些黏糊糊的东西。",
         "\t[原始人]之前捡到了一个来历不明的方块状东西（怪物手册），好像能打开，不知道里面有没有写什么",
diff --git a/public/project/floors/MT10.js b/public/project/floors/MT10.js
index 3c9cf9c..116abdc 100644
--- a/public/project/floors/MT10.js
+++ b/public/project/floors/MT10.js
@@ -12,7 +12,7 @@ main.floors.MT10=
     "images": [],
     "ratio": 1,
     "defaultGround": "grass",
-    "bgm": "grass.mp3",
+    "bgm": "grass.opus",
     "firstArrive": [],
     "eachArrive": [],
     "parallelDo": "",
diff --git a/public/project/floors/MT11.js b/public/project/floors/MT11.js
index 9b6311f..2d1ce51 100644
--- a/public/project/floors/MT11.js
+++ b/public/project/floors/MT11.js
@@ -12,7 +12,7 @@ main.floors.MT11=
     "images": [],
     "ratio": 1,
     "defaultGround": "grass",
-    "bgm": "grass.mp3",
+    "bgm": "grass.opus",
     "firstArrive": [],
     "eachArrive": [],
     "parallelDo": "",
diff --git a/public/project/floors/MT12.js b/public/project/floors/MT12.js
index 9650aaf..13d11a7 100644
--- a/public/project/floors/MT12.js
+++ b/public/project/floors/MT12.js
@@ -12,7 +12,7 @@ main.floors.MT12=
     "images": [],
     "ratio": 1,
     "defaultGround": "grass",
-    "bgm": "grass.mp3",
+    "bgm": "grass.opus",
     "firstArrive": [],
     "eachArrive": [],
     "parallelDo": "",
diff --git a/public/project/floors/MT13.js b/public/project/floors/MT13.js
index 1ee5a40..400eb04 100644
--- a/public/project/floors/MT13.js
+++ b/public/project/floors/MT13.js
@@ -12,7 +12,7 @@ main.floors.MT13=
     "images": [],
     "ratio": 1,
     "defaultGround": "grass",
-    "bgm": "mount.mp3",
+    "bgm": "mount.opus",
     "firstArrive": [],
     "eachArrive": [],
     "parallelDo": "",
diff --git a/public/project/floors/MT14.js b/public/project/floors/MT14.js
index 446af01..c273ebd 100644
--- a/public/project/floors/MT14.js
+++ b/public/project/floors/MT14.js
@@ -12,7 +12,7 @@ main.floors.MT14=
     "images": [],
     "ratio": 1,
     "defaultGround": "T331",
-    "bgm": "mount.mp3",
+    "bgm": "mount.opus",
     "firstArrive": null,
     "eachArrive": [
         {
diff --git a/public/project/floors/MT15.js b/public/project/floors/MT15.js
index c7e14e7..7b76b6f 100644
--- a/public/project/floors/MT15.js
+++ b/public/project/floors/MT15.js
@@ -12,7 +12,7 @@ main.floors.MT15=
     "images": [],
     "ratio": 1,
     "defaultGround": "T331",
-    "bgm": "mount.mp3",
+    "bgm": "mount.opus",
     "color": [
         0,
         0,
diff --git a/public/project/floors/MT16.js b/public/project/floors/MT16.js
index c4b333b..abd8ace 100644
--- a/public/project/floors/MT16.js
+++ b/public/project/floors/MT16.js
@@ -12,7 +12,7 @@ main.floors.MT16=
     "images": [],
     "ratio": 1,
     "defaultGround": "T331",
-    "bgm": "mount.mp3",
+    "bgm": "mount.opus",
     "color": null,
     "weather": [
         "cloud",
diff --git a/public/project/floors/MT17.js b/public/project/floors/MT17.js
index 9df3ccf..5e805a3 100644
--- a/public/project/floors/MT17.js
+++ b/public/project/floors/MT17.js
@@ -12,7 +12,7 @@ main.floors.MT17=
     "images": [],
     "ratio": 2,
     "defaultGround": "grass",
-    "bgm": "plot1.mp3",
+    "bgm": "plot1.opus",
     "color": null,
     "weather": null,
     "firstArrive": [
diff --git a/public/project/floors/MT18.js b/public/project/floors/MT18.js
index 3dd2519..6895182 100644
--- a/public/project/floors/MT18.js
+++ b/public/project/floors/MT18.js
@@ -12,7 +12,7 @@ main.floors.MT18=
     "images": [],
     "ratio": 2,
     "defaultGround": "grass",
-    "bgm": "plot1.mp3",
+    "bgm": "plot1.opus",
     "firstArrive": [],
     "eachArrive": [],
     "parallelDo": "",
diff --git a/public/project/floors/MT19.js b/public/project/floors/MT19.js
index cd4ee8b..90f41bb 100644
--- a/public/project/floors/MT19.js
+++ b/public/project/floors/MT19.js
@@ -12,7 +12,7 @@ main.floors.MT19=
     "images": [],
     "ratio": 2,
     "defaultGround": "grass",
-    "bgm": "plot1.mp3",
+    "bgm": "plot1.opus",
     "firstArrive": [],
     "eachArrive": [],
     "parallelDo": "",
diff --git a/public/project/floors/MT20.js b/public/project/floors/MT20.js
index a8442e5..11217e4 100644
--- a/public/project/floors/MT20.js
+++ b/public/project/floors/MT20.js
@@ -12,7 +12,7 @@ main.floors.MT20=
     "images": [],
     "ratio": 2,
     "defaultGround": "grass",
-    "bgm": "plot1.mp3",
+    "bgm": "plot1.opus",
     "firstArrive": null,
     "eachArrive": [
         {
diff --git a/public/project/floors/MT21.js b/public/project/floors/MT21.js
index a117e57..e06d7f3 100644
--- a/public/project/floors/MT21.js
+++ b/public/project/floors/MT21.js
@@ -12,7 +12,7 @@ main.floors.MT21=
     "images": [],
     "ratio": 2,
     "defaultGround": "grass",
-    "bgm": "plot1.mp3",
+    "bgm": "plot1.opus",
     "firstArrive": [],
     "eachArrive": [],
     "parallelDo": "",
diff --git a/public/project/floors/MT22.js b/public/project/floors/MT22.js
index ecc141c..cd8c3d2 100644
--- a/public/project/floors/MT22.js
+++ b/public/project/floors/MT22.js
@@ -12,7 +12,7 @@ main.floors.MT22=
     "images": [],
     "ratio": 2,
     "defaultGround": "grass",
-    "bgm": "road.mp3",
+    "bgm": "road.opus",
     "firstArrive": [],
     "eachArrive": [],
     "parallelDo": "",
diff --git a/public/project/floors/MT23.js b/public/project/floors/MT23.js
index 384bdc8..b4c344a 100644
--- a/public/project/floors/MT23.js
+++ b/public/project/floors/MT23.js
@@ -12,7 +12,7 @@ main.floors.MT23=
     "images": [],
     "ratio": 2,
     "defaultGround": "grass",
-    "bgm": "road.mp3",
+    "bgm": "road.opus",
     "firstArrive": [],
     "eachArrive": [],
     "parallelDo": "",
diff --git a/public/project/floors/MT24.js b/public/project/floors/MT24.js
index 75bdb1a..71b59b1 100644
--- a/public/project/floors/MT24.js
+++ b/public/project/floors/MT24.js
@@ -12,7 +12,7 @@ main.floors.MT24=
     "images": [],
     "ratio": 2,
     "defaultGround": "grass",
-    "bgm": "road.mp3",
+    "bgm": "road.opus",
     "firstArrive": [],
     "eachArrive": [],
     "parallelDo": "",
diff --git a/public/project/floors/MT25.js b/public/project/floors/MT25.js
index 7fc54c0..c294525 100644
--- a/public/project/floors/MT25.js
+++ b/public/project/floors/MT25.js
@@ -12,7 +12,7 @@ main.floors.MT25=
     "images": [],
     "ratio": 2,
     "defaultGround": "grass",
-    "bgm": "road.mp3",
+    "bgm": "road.opus",
     "firstArrive": [],
     "eachArrive": [],
     "parallelDo": "",
diff --git a/public/project/floors/MT26.js b/public/project/floors/MT26.js
index bc2bad1..6f78608 100644
--- a/public/project/floors/MT26.js
+++ b/public/project/floors/MT26.js
@@ -12,7 +12,7 @@ main.floors.MT26=
     "images": [],
     "ratio": 2,
     "defaultGround": "grass",
-    "bgm": "road.mp3",
+    "bgm": "road.opus",
     "firstArrive": [],
     "eachArrive": [],
     "parallelDo": "",
diff --git a/public/project/floors/MT27.js b/public/project/floors/MT27.js
index 9140f9e..17dd99f 100644
--- a/public/project/floors/MT27.js
+++ b/public/project/floors/MT27.js
@@ -12,7 +12,7 @@ main.floors.MT27=
     "images": [],
     "ratio": 2,
     "defaultGround": "grass",
-    "bgm": "road.mp3",
+    "bgm": "road.opus",
     "firstArrive": [],
     "eachArrive": [],
     "parallelDo": "",
diff --git a/public/project/floors/MT28.js b/public/project/floors/MT28.js
index a66944a..4c8b653 100644
--- a/public/project/floors/MT28.js
+++ b/public/project/floors/MT28.js
@@ -12,7 +12,7 @@ main.floors.MT28=
     "images": [],
     "ratio": 2,
     "defaultGround": "grass",
-    "bgm": "road.mp3",
+    "bgm": "road.opus",
     "firstArrive": [],
     "eachArrive": [],
     "parallelDo": "",
diff --git a/public/project/floors/MT3.js b/public/project/floors/MT3.js
index 9f43603..53d1989 100644
--- a/public/project/floors/MT3.js
+++ b/public/project/floors/MT3.js
@@ -12,7 +12,7 @@ main.floors.MT3=
     "images": [],
     "ratio": 1,
     "defaultGround": "T331",
-    "bgm": "cave.mp3",
+    "bgm": "cave.opus",
     "firstArrive": [],
     "eachArrive": [],
     "parallelDo": "",
diff --git a/public/project/floors/MT30.js b/public/project/floors/MT30.js
index 9d1a485..ab95f52 100644
--- a/public/project/floors/MT30.js
+++ b/public/project/floors/MT30.js
@@ -12,7 +12,7 @@ main.floors.MT30=
     "images": [],
     "ratio": 2,
     "defaultGround": "grass",
-    "bgm": "road.mp3",
+    "bgm": "road.opus",
     "firstArrive": [],
     "eachArrive": [],
     "parallelDo": "",
diff --git a/public/project/floors/MT31.js b/public/project/floors/MT31.js
index 8dcaca3..83ba39d 100644
--- a/public/project/floors/MT31.js
+++ b/public/project/floors/MT31.js
@@ -12,7 +12,7 @@ main.floors.MT31=
     "images": [],
     "ratio": 2,
     "defaultGround": "grass",
-    "bgm": "road.mp3",
+    "bgm": "road.opus",
     "firstArrive": [
         "\t[低级智人]\b[up,hero]杰克，你为什么在这？",
         "\t[杰克,thief]\b[up,4,7]哟，咱好久不见了，我只是来这里寻找点东西。",
diff --git a/public/project/floors/MT32.js b/public/project/floors/MT32.js
index b230c96..8abb9ec 100644
--- a/public/project/floors/MT32.js
+++ b/public/project/floors/MT32.js
@@ -12,7 +12,7 @@ main.floors.MT32=
     "images": [],
     "ratio": 8,
     "defaultGround": "T580",
-    "bgm": "winter.mp3",
+    "bgm": "winter.opus",
     "firstArrive": [
         {
             "type": "function",
diff --git a/public/project/floors/MT33.js b/public/project/floors/MT33.js
index 296445e..3304e03 100644
--- a/public/project/floors/MT33.js
+++ b/public/project/floors/MT33.js
@@ -12,7 +12,7 @@ main.floors.MT33=
     "images": [],
     "ratio": 8,
     "defaultGround": "T580",
-    "bgm": "winter.mp3",
+    "bgm": "winter.opus",
     "firstArrive": [],
     "eachArrive": [],
     "parallelDo": "",
diff --git a/public/project/floors/MT34.js b/public/project/floors/MT34.js
index 7d95927..677748f 100644
--- a/public/project/floors/MT34.js
+++ b/public/project/floors/MT34.js
@@ -12,7 +12,7 @@ main.floors.MT34=
     "images": [],
     "ratio": 8,
     "defaultGround": "T580",
-    "bgm": "winter.mp3",
+    "bgm": "winter.opus",
     "firstArrive": [],
     "eachArrive": [],
     "parallelDo": "",
diff --git a/public/project/floors/MT35.js b/public/project/floors/MT35.js
index 69e51a1..cd7ba76 100644
--- a/public/project/floors/MT35.js
+++ b/public/project/floors/MT35.js
@@ -12,7 +12,7 @@ main.floors.MT35=
     "images": [],
     "ratio": 8,
     "defaultGround": "T580",
-    "bgm": "winter.mp3",
+    "bgm": "winter.opus",
     "firstArrive": [],
     "eachArrive": [],
     "parallelDo": "",
diff --git a/public/project/floors/MT36.js b/public/project/floors/MT36.js
index e028c4b..6448cdb 100644
--- a/public/project/floors/MT36.js
+++ b/public/project/floors/MT36.js
@@ -12,7 +12,7 @@ main.floors.MT36=
     "images": [],
     "ratio": 8,
     "defaultGround": "T580",
-    "bgm": "winter.mp3",
+    "bgm": "winter.opus",
     "firstArrive": [],
     "eachArrive": [],
     "parallelDo": "",
diff --git a/public/project/floors/MT37.js b/public/project/floors/MT37.js
index caa9bb7..722ac88 100644
--- a/public/project/floors/MT37.js
+++ b/public/project/floors/MT37.js
@@ -12,7 +12,7 @@ main.floors.MT37=
     "images": [],
     "ratio": 8,
     "defaultGround": "T580",
-    "bgm": "winter.mp3",
+    "bgm": "winter.opus",
     "firstArrive": [],
     "eachArrive": [],
     "parallelDo": "",
diff --git a/public/project/floors/MT38.js b/public/project/floors/MT38.js
index 75eb68a..f57c181 100644
--- a/public/project/floors/MT38.js
+++ b/public/project/floors/MT38.js
@@ -12,7 +12,7 @@ main.floors.MT38=
     "images": [],
     "ratio": 8,
     "defaultGround": "T580",
-    "bgm": "winter.mp3",
+    "bgm": "winter.opus",
     "firstArrive": [
         "\t[低级智人]\b[down,hero]奇怪，这里的山崖边竟然有护栏，难道这附近有其他人吗？"
     ],
diff --git a/public/project/floors/MT39.js b/public/project/floors/MT39.js
index 0c06808..dddeac7 100644
--- a/public/project/floors/MT39.js
+++ b/public/project/floors/MT39.js
@@ -12,7 +12,7 @@ main.floors.MT39=
     "images": [],
     "ratio": 8,
     "defaultGround": "T580",
-    "bgm": "winter.mp3",
+    "bgm": "winter.opus",
     "firstArrive": [],
     "eachArrive": [],
     "parallelDo": "",
diff --git a/public/project/floors/MT4.js b/public/project/floors/MT4.js
index b68d294..c4597e2 100644
--- a/public/project/floors/MT4.js
+++ b/public/project/floors/MT4.js
@@ -12,7 +12,7 @@ main.floors.MT4=
     "images": [],
     "ratio": 1,
     "defaultGround": "T331",
-    "bgm": "cave.mp3",
+    "bgm": "cave.opus",
     "firstArrive": [],
     "eachArrive": [],
     "parallelDo": "",
diff --git a/public/project/floors/MT40.js b/public/project/floors/MT40.js
index 9447a5e..28c9fb6 100644
--- a/public/project/floors/MT40.js
+++ b/public/project/floors/MT40.js
@@ -12,7 +12,7 @@ main.floors.MT40=
     "images": [],
     "ratio": 8,
     "defaultGround": "T580",
-    "bgm": "winter.mp3",
+    "bgm": "winter.opus",
     "firstArrive": null,
     "eachArrive": [],
     "parallelDo": "",
diff --git a/public/project/floors/MT41.js b/public/project/floors/MT41.js
index 7e71de5..f2ef0cc 100644
--- a/public/project/floors/MT41.js
+++ b/public/project/floors/MT41.js
@@ -12,7 +12,7 @@ main.floors.MT41=
     "images": [],
     "ratio": 8,
     "defaultGround": "T331",
-    "bgm": "winter.mp3",
+    "bgm": "winter.opus",
     "firstArrive": [],
     "eachArrive": [],
     "parallelDo": "",
diff --git a/public/project/floors/MT42.js b/public/project/floors/MT42.js
index 28b6b83..4a9ed9c 100644
--- a/public/project/floors/MT42.js
+++ b/public/project/floors/MT42.js
@@ -12,7 +12,7 @@ main.floors.MT42=
     "images": [],
     "ratio": 8,
     "defaultGround": "T580",
-    "bgm": "winter.mp3",
+    "bgm": "winter.opus",
     "firstArrive": [],
     "eachArrive": [],
     "parallelDo": "",
diff --git a/public/project/floors/MT43.js b/public/project/floors/MT43.js
index 2639f14..0455b3f 100644
--- a/public/project/floors/MT43.js
+++ b/public/project/floors/MT43.js
@@ -12,7 +12,7 @@ main.floors.MT43=
     "images": [],
     "ratio": 8,
     "defaultGround": "T580",
-    "bgm": "winter.mp3",
+    "bgm": "winter.opus",
     "firstArrive": [],
     "eachArrive": [],
     "parallelDo": "",
diff --git a/public/project/floors/MT44.js b/public/project/floors/MT44.js
index 17b493c..4335b3e 100644
--- a/public/project/floors/MT44.js
+++ b/public/project/floors/MT44.js
@@ -12,7 +12,7 @@ main.floors.MT44=
     "images": [],
     "ratio": 8,
     "defaultGround": "T580",
-    "bgm": "winter.mp3",
+    "bgm": "winter.opus",
     "firstArrive": [],
     "eachArrive": [],
     "parallelDo": "",
diff --git a/public/project/floors/MT45.js b/public/project/floors/MT45.js
index 2af3b49..6de9015 100644
--- a/public/project/floors/MT45.js
+++ b/public/project/floors/MT45.js
@@ -12,7 +12,7 @@ main.floors.MT45=
     "images": [],
     "ratio": 8,
     "defaultGround": "T580",
-    "bgm": "winter.mp3",
+    "bgm": "winter.opus",
     "firstArrive": [],
     "eachArrive": [],
     "parallelDo": "",
diff --git a/public/project/floors/MT46.js b/public/project/floors/MT46.js
index 571abcb..8798100 100644
--- a/public/project/floors/MT46.js
+++ b/public/project/floors/MT46.js
@@ -12,7 +12,7 @@ main.floors.MT46=
     "images": [],
     "ratio": 8,
     "defaultGround": "T331",
-    "bgm": "winter.mp3",
+    "bgm": "winter.opus",
     "firstArrive": [],
     "eachArrive": [],
     "parallelDo": "",
diff --git a/public/project/floors/MT47.js b/public/project/floors/MT47.js
index 090aff1..a82c689 100644
--- a/public/project/floors/MT47.js
+++ b/public/project/floors/MT47.js
@@ -12,7 +12,7 @@ main.floors.MT47=
     "images": [],
     "ratio": 8,
     "defaultGround": "T580",
-    "bgm": "winter.mp3",
+    "bgm": "winter.opus",
     "firstArrive": [],
     "eachArrive": [],
     "parallelDo": "",
diff --git a/public/project/floors/MT48.js b/public/project/floors/MT48.js
index 82a07a1..01e5d0a 100644
--- a/public/project/floors/MT48.js
+++ b/public/project/floors/MT48.js
@@ -12,7 +12,7 @@ main.floors.MT48=
     "images": [],
     "ratio": 8,
     "defaultGround": "T580",
-    "bgm": "winter.mp3",
+    "bgm": "winter.opus",
     "firstArrive": [],
     "eachArrive": [],
     "parallelDo": "",
diff --git a/public/project/floors/MT49.js b/public/project/floors/MT49.js
index 4a52ad4..d01d8f9 100644
--- a/public/project/floors/MT49.js
+++ b/public/project/floors/MT49.js
@@ -12,7 +12,7 @@ main.floors.MT49=
     "images": [],
     "ratio": 8,
     "defaultGround": "T580",
-    "bgm": "winter.mp3",
+    "bgm": "winter.opus",
     "firstArrive": [],
     "eachArrive": [],
     "parallelDo": "",
diff --git a/public/project/floors/MT5.js b/public/project/floors/MT5.js
index 37b2f6a..d444535 100644
--- a/public/project/floors/MT5.js
+++ b/public/project/floors/MT5.js
@@ -12,7 +12,7 @@ main.floors.MT5=
     "images": [],
     "ratio": 1,
     "defaultGround": "T331",
-    "bgm": "cave.mp3",
+    "bgm": "cave.opus",
     "firstArrive": [],
     "eachArrive": [],
     "parallelDo": "",
diff --git a/public/project/floors/MT50.js b/public/project/floors/MT50.js
index 0ac4c56..084e098 100644
--- a/public/project/floors/MT50.js
+++ b/public/project/floors/MT50.js
@@ -12,7 +12,7 @@ main.floors.MT50=
     "images": [],
     "ratio": 8,
     "defaultGround": "T650",
-    "bgm": "palaceSouth.mp3",
+    "bgm": "palaceSouth.opus",
     "firstArrive": [
         {
             "type": "openDoor",
diff --git a/public/project/floors/MT51.js b/public/project/floors/MT51.js
index e8f2d36..90860bf 100644
--- a/public/project/floors/MT51.js
+++ b/public/project/floors/MT51.js
@@ -12,7 +12,7 @@ main.floors.MT51=
     "images": [],
     "ratio": 8,
     "defaultGround": "T650",
-    "bgm": "palaceSouth.mp3",
+    "bgm": "palaceSouth.opus",
     "firstArrive": [],
     "eachArrive": [],
     "parallelDo": "",
diff --git a/public/project/floors/MT52.js b/public/project/floors/MT52.js
index e74a714..84591a6 100644
--- a/public/project/floors/MT52.js
+++ b/public/project/floors/MT52.js
@@ -12,7 +12,7 @@ main.floors.MT52=
     "images": [],
     "ratio": 8,
     "defaultGround": "T650",
-    "bgm": "palaceSouth.mp3",
+    "bgm": "palaceSouth.opus",
     "firstArrive": [],
     "eachArrive": [],
     "parallelDo": "",
diff --git a/public/project/floors/MT53.js b/public/project/floors/MT53.js
index 43f7663..68e1b6c 100644
--- a/public/project/floors/MT53.js
+++ b/public/project/floors/MT53.js
@@ -12,7 +12,7 @@ main.floors.MT53=
     "images": [],
     "ratio": 8,
     "defaultGround": "T650",
-    "bgm": "palaceSouth.mp3",
+    "bgm": "palaceSouth.opus",
     "firstArrive": [],
     "eachArrive": [],
     "parallelDo": "",
diff --git a/public/project/floors/MT54.js b/public/project/floors/MT54.js
index 494e1c6..7092308 100644
--- a/public/project/floors/MT54.js
+++ b/public/project/floors/MT54.js
@@ -12,7 +12,7 @@ main.floors.MT54=
     "images": [],
     "ratio": 8,
     "defaultGround": "T650",
-    "bgm": "palaceSouth.mp3",
+    "bgm": "palaceSouth.opus",
     "firstArrive": [],
     "eachArrive": [],
     "parallelDo": "",
diff --git a/public/project/floors/MT55.js b/public/project/floors/MT55.js
index 0a57b20..58505a4 100644
--- a/public/project/floors/MT55.js
+++ b/public/project/floors/MT55.js
@@ -12,7 +12,7 @@ main.floors.MT55=
     "images": [],
     "ratio": 8,
     "defaultGround": "T650",
-    "bgm": "palaceSouth.mp3",
+    "bgm": "palaceSouth.opus",
     "firstArrive": [],
     "eachArrive": [],
     "parallelDo": "",
diff --git a/public/project/floors/MT56.js b/public/project/floors/MT56.js
index 433668e..cbb7a28 100644
--- a/public/project/floors/MT56.js
+++ b/public/project/floors/MT56.js
@@ -12,7 +12,7 @@ main.floors.MT56=
     "images": [],
     "ratio": 8,
     "defaultGround": "T650",
-    "bgm": "palaceSouth.mp3",
+    "bgm": "palaceSouth.opus",
     "firstArrive": [],
     "eachArrive": [],
     "parallelDo": "",
diff --git a/public/project/floors/MT57.js b/public/project/floors/MT57.js
index f93cb27..0fa93eb 100644
--- a/public/project/floors/MT57.js
+++ b/public/project/floors/MT57.js
@@ -12,7 +12,7 @@ main.floors.MT57=
     "images": [],
     "ratio": 8,
     "defaultGround": "T650",
-    "bgm": "palaceSouth.mp3",
+    "bgm": "palaceSouth.opus",
     "firstArrive": [],
     "eachArrive": [],
     "parallelDo": "",
diff --git a/public/project/floors/MT58.js b/public/project/floors/MT58.js
index 60a6135..6d40957 100644
--- a/public/project/floors/MT58.js
+++ b/public/project/floors/MT58.js
@@ -12,7 +12,7 @@ main.floors.MT58=
     "images": [],
     "ratio": 8,
     "defaultGround": "T650",
-    "bgm": "palaceSouth.mp3",
+    "bgm": "palaceSouth.opus",
     "firstArrive": [],
     "eachArrive": [],
     "parallelDo": "",
diff --git a/public/project/floors/MT59.js b/public/project/floors/MT59.js
index e6fedd1..4f5aaa5 100644
--- a/public/project/floors/MT59.js
+++ b/public/project/floors/MT59.js
@@ -12,7 +12,7 @@ main.floors.MT59=
     "images": [],
     "ratio": 8,
     "defaultGround": "T650",
-    "bgm": "palaceSouth.mp3",
+    "bgm": "palaceSouth.opus",
     "firstArrive": [],
     "eachArrive": [],
     "parallelDo": "",
diff --git a/public/project/floors/MT6.js b/public/project/floors/MT6.js
index e5c4c6e..dfb48a9 100644
--- a/public/project/floors/MT6.js
+++ b/public/project/floors/MT6.js
@@ -12,7 +12,7 @@ main.floors.MT6=
     "images": [],
     "ratio": 1,
     "defaultGround": "grass",
-    "bgm": "grass.mp3",
+    "bgm": "grass.opus",
     "firstArrive": [
         {
             "type": "setCurtain",
diff --git a/public/project/floors/MT60.js b/public/project/floors/MT60.js
index dd9266a..adec2e5 100644
--- a/public/project/floors/MT60.js
+++ b/public/project/floors/MT60.js
@@ -12,7 +12,7 @@ main.floors.MT60=
     "images": [],
     "ratio": 8,
     "defaultGround": "T650",
-    "bgm": "palaceSouth.mp3",
+    "bgm": "palaceSouth.opus",
     "firstArrive": [],
     "eachArrive": [],
     "parallelDo": "",
diff --git a/public/project/floors/MT61.js b/public/project/floors/MT61.js
index 6307948..1f70396 100644
--- a/public/project/floors/MT61.js
+++ b/public/project/floors/MT61.js
@@ -12,7 +12,7 @@ main.floors.MT61=
     "images": [],
     "ratio": 8,
     "defaultGround": "T650",
-    "bgm": "palaceSouth.mp3",
+    "bgm": "palaceSouth.opus",
     "firstArrive": [],
     "eachArrive": [],
     "parallelDo": "",
diff --git a/public/project/floors/MT62.js b/public/project/floors/MT62.js
index b8af2bd..e04abbf 100644
--- a/public/project/floors/MT62.js
+++ b/public/project/floors/MT62.js
@@ -12,7 +12,7 @@ main.floors.MT62=
     "images": [],
     "ratio": 8,
     "defaultGround": "T650",
-    "bgm": "palaceSouth.mp3",
+    "bgm": "palaceSouth.opus",
     "firstArrive": [],
     "eachArrive": [],
     "parallelDo": "",
diff --git a/public/project/floors/MT63.js b/public/project/floors/MT63.js
index d52b4f6..c15ba99 100644
--- a/public/project/floors/MT63.js
+++ b/public/project/floors/MT63.js
@@ -12,7 +12,7 @@ main.floors.MT63=
     "images": [],
     "ratio": 8,
     "defaultGround": "T650",
-    "bgm": "palaceSouth.mp3",
+    "bgm": "palaceSouth.opus",
     "firstArrive": [],
     "eachArrive": [],
     "parallelDo": "",
diff --git a/public/project/floors/MT64.js b/public/project/floors/MT64.js
index 13daa6a..b438461 100644
--- a/public/project/floors/MT64.js
+++ b/public/project/floors/MT64.js
@@ -12,7 +12,7 @@ main.floors.MT64=
     "images": [],
     "ratio": 8,
     "defaultGround": "T650",
-    "bgm": "palaceSouth.mp3",
+    "bgm": "palaceSouth.opus",
     "firstArrive": [],
     "eachArrive": [],
     "parallelDo": "",
diff --git a/public/project/floors/MT65.js b/public/project/floors/MT65.js
index 10fd22c..67809f0 100644
--- a/public/project/floors/MT65.js
+++ b/public/project/floors/MT65.js
@@ -12,7 +12,7 @@ main.floors.MT65=
     "images": [],
     "ratio": 8,
     "defaultGround": "T650",
-    "bgm": "palaceSouth.mp3",
+    "bgm": "palaceSouth.opus",
     "firstArrive": [],
     "eachArrive": [],
     "parallelDo": "",
diff --git a/public/project/floors/MT66.js b/public/project/floors/MT66.js
index b9732d1..1077160 100644
--- a/public/project/floors/MT66.js
+++ b/public/project/floors/MT66.js
@@ -12,7 +12,7 @@ main.floors.MT66=
     "images": [],
     "ratio": 8,
     "defaultGround": "T650",
-    "bgm": "palaceSouth.mp3",
+    "bgm": "palaceSouth.opus",
     "firstArrive": [],
     "eachArrive": [],
     "parallelDo": "",
diff --git a/public/project/floors/MT67.js b/public/project/floors/MT67.js
index 6d7a2a7..f532a0e 100644
--- a/public/project/floors/MT67.js
+++ b/public/project/floors/MT67.js
@@ -12,7 +12,7 @@ main.floors.MT67=
     "images": [],
     "ratio": 8,
     "defaultGround": "T650",
-    "bgm": "palaceSouth.mp3",
+    "bgm": "palaceSouth.opus",
     "firstArrive": [],
     "eachArrive": [],
     "parallelDo": "",
diff --git a/public/project/floors/MT68.js b/public/project/floors/MT68.js
index a3a697b..6619adb 100644
--- a/public/project/floors/MT68.js
+++ b/public/project/floors/MT68.js
@@ -12,7 +12,7 @@ main.floors.MT68=
     "images": [],
     "ratio": 8,
     "defaultGround": "T650",
-    "bgm": "palaceSouth.mp3",
+    "bgm": "palaceSouth.opus",
     "firstArrive": [],
     "eachArrive": [],
     "parallelDo": "",
diff --git a/public/project/floors/MT69.js b/public/project/floors/MT69.js
index eea6b65..1241b03 100644
--- a/public/project/floors/MT69.js
+++ b/public/project/floors/MT69.js
@@ -12,7 +12,7 @@ main.floors.MT69=
     "images": [],
     "ratio": 8,
     "defaultGround": "T650",
-    "bgm": "palaceSouth.mp3",
+    "bgm": "palaceSouth.opus",
     "firstArrive": [],
     "eachArrive": [],
     "parallelDo": "",
diff --git a/public/project/floors/MT7.js b/public/project/floors/MT7.js
index 77456ac..0a95903 100644
--- a/public/project/floors/MT7.js
+++ b/public/project/floors/MT7.js
@@ -12,7 +12,7 @@ main.floors.MT7=
     "images": [],
     "ratio": 1,
     "defaultGround": "grass",
-    "bgm": "grass.mp3",
+    "bgm": "grass.opus",
     "firstArrive": [],
     "eachArrive": [],
     "parallelDo": "",
diff --git a/public/project/floors/MT70.js b/public/project/floors/MT70.js
index 4a5145f..b7e5c23 100644
--- a/public/project/floors/MT70.js
+++ b/public/project/floors/MT70.js
@@ -12,7 +12,7 @@ main.floors.MT70=
 "images": [],
 "ratio": 8,
 "defaultGround": "T650",
-"bgm": "palaceSouth.mp3",
+"bgm": "palaceSouth.opus",
 "firstArrive": [],
 "eachArrive": [],
 "parallelDo": "",
diff --git a/public/project/floors/MT71.js b/public/project/floors/MT71.js
index 257acfa..e3808de 100644
--- a/public/project/floors/MT71.js
+++ b/public/project/floors/MT71.js
@@ -12,7 +12,7 @@ main.floors.MT71=
     "images": [],
     "ratio": 8,
     "defaultGround": "T650",
-    "bgm": "palaceSouth.mp3",
+    "bgm": "palaceSouth.opus",
     "firstArrive": [],
     "eachArrive": [],
     "parallelDo": "",
diff --git a/public/project/floors/MT72.js b/public/project/floors/MT72.js
index d642ec2..2e55314 100644
--- a/public/project/floors/MT72.js
+++ b/public/project/floors/MT72.js
@@ -12,7 +12,7 @@ main.floors.MT72=
     "images": [],
     "ratio": 8,
     "defaultGround": "T650",
-    "bgm": "palaceNorth.mp3",
+    "bgm": "palaceNorth.opus",
     "firstArrive": [],
     "eachArrive": [],
     "parallelDo": "",
diff --git a/public/project/floors/MT73.js b/public/project/floors/MT73.js
index 6bd3c02..c6519aa 100644
--- a/public/project/floors/MT73.js
+++ b/public/project/floors/MT73.js
@@ -12,7 +12,7 @@ main.floors.MT73=
     "images": [],
     "ratio": 8,
     "defaultGround": "T650",
-    "bgm": "palaceNorth.mp3",
+    "bgm": "palaceNorth.opus",
     "firstArrive": [],
     "eachArrive": [],
     "parallelDo": "",
diff --git a/public/project/floors/MT74.js b/public/project/floors/MT74.js
index b779592..b1c6da2 100644
--- a/public/project/floors/MT74.js
+++ b/public/project/floors/MT74.js
@@ -12,7 +12,7 @@ main.floors.MT74=
     "images": [],
     "ratio": 8,
     "defaultGround": "T650",
-    "bgm": "palaceNorth.mp3",
+    "bgm": "palaceNorth.opus",
     "firstArrive": [],
     "eachArrive": [],
     "parallelDo": "",
diff --git a/public/project/floors/MT75.js b/public/project/floors/MT75.js
index d69035e..0a609c0 100644
--- a/public/project/floors/MT75.js
+++ b/public/project/floors/MT75.js
@@ -12,7 +12,7 @@ main.floors.MT75=
     "images": [],
     "ratio": 8,
     "defaultGround": "T650",
-    "bgm": "palaceNorth.mp3",
+    "bgm": "palaceNorth.opus",
     "firstArrive": [],
     "eachArrive": [],
     "parallelDo": "",
diff --git a/public/project/floors/MT76.js b/public/project/floors/MT76.js
index 6b32891..4b004a9 100644
--- a/public/project/floors/MT76.js
+++ b/public/project/floors/MT76.js
@@ -12,7 +12,7 @@ main.floors.MT76=
     "images": [],
     "ratio": 8,
     "defaultGround": "T650",
-    "bgm": "palaceNorth.mp3",
+    "bgm": "palaceNorth.opus",
     "firstArrive": [],
     "eachArrive": [],
     "parallelDo": "",
diff --git a/public/project/floors/MT77.js b/public/project/floors/MT77.js
index 6a4053f..499ad54 100644
--- a/public/project/floors/MT77.js
+++ b/public/project/floors/MT77.js
@@ -12,7 +12,7 @@ main.floors.MT77=
     "images": [],
     "ratio": 8,
     "defaultGround": "T650",
-    "bgm": "palaceNorth.mp3",
+    "bgm": "palaceNorth.opus",
     "firstArrive": [],
     "eachArrive": [],
     "parallelDo": "",
diff --git a/public/project/floors/MT78.js b/public/project/floors/MT78.js
index b2220c9..42cf519 100644
--- a/public/project/floors/MT78.js
+++ b/public/project/floors/MT78.js
@@ -12,7 +12,7 @@ main.floors.MT78=
     "images": [],
     "ratio": 8,
     "defaultGround": "T650",
-    "bgm": "palaceNorth.mp3",
+    "bgm": "palaceNorth.opus",
     "firstArrive": [],
     "eachArrive": [],
     "parallelDo": "",
diff --git a/public/project/floors/MT79.js b/public/project/floors/MT79.js
index e4ed164..68f356e 100644
--- a/public/project/floors/MT79.js
+++ b/public/project/floors/MT79.js
@@ -12,7 +12,7 @@ main.floors.MT79=
     "images": [],
     "ratio": 8,
     "defaultGround": "T650",
-    "bgm": "palaceNorth.mp3",
+    "bgm": "palaceNorth.opus",
     "firstArrive": [],
     "eachArrive": [],
     "parallelDo": "",
diff --git a/public/project/floors/MT8.js b/public/project/floors/MT8.js
index 7684f9b..fa77231 100644
--- a/public/project/floors/MT8.js
+++ b/public/project/floors/MT8.js
@@ -12,7 +12,7 @@ main.floors.MT8=
     "images": [],
     "ratio": 1,
     "defaultGround": "grass",
-    "bgm": "grass.mp3",
+    "bgm": "grass.opus",
     "firstArrive": [],
     "eachArrive": [],
     "parallelDo": "",
diff --git a/public/project/floors/MT80.js b/public/project/floors/MT80.js
index 10bb88c..ba03a92 100644
--- a/public/project/floors/MT80.js
+++ b/public/project/floors/MT80.js
@@ -12,7 +12,7 @@ main.floors.MT80=
     "images": [],
     "ratio": 8,
     "defaultGround": "T650",
-    "bgm": "palaceNorth.mp3",
+    "bgm": "palaceNorth.opus",
     "firstArrive": [],
     "eachArrive": [],
     "parallelDo": "",
diff --git a/public/project/floors/MT81.js b/public/project/floors/MT81.js
index 2dc6325..0a9fecb 100644
--- a/public/project/floors/MT81.js
+++ b/public/project/floors/MT81.js
@@ -12,7 +12,7 @@ main.floors.MT81=
     "images": [],
     "ratio": 8,
     "defaultGround": "T650",
-    "bgm": "palaceNorth.mp3",
+    "bgm": "palaceNorth.opus",
     "firstArrive": [],
     "eachArrive": [],
     "parallelDo": "",
diff --git a/public/project/floors/MT82.js b/public/project/floors/MT82.js
index 9013883..3c7303c 100644
--- a/public/project/floors/MT82.js
+++ b/public/project/floors/MT82.js
@@ -12,7 +12,7 @@ main.floors.MT82=
     "images": [],
     "ratio": 8,
     "defaultGround": "T650",
-    "bgm": "palaceNorth.mp3",
+    "bgm": "palaceNorth.opus",
     "firstArrive": [],
     "eachArrive": [],
     "parallelDo": "",
diff --git a/public/project/floors/MT83.js b/public/project/floors/MT83.js
index fdaa6c7..fbd397c 100644
--- a/public/project/floors/MT83.js
+++ b/public/project/floors/MT83.js
@@ -12,7 +12,7 @@ main.floors.MT83=
     "images": [],
     "ratio": 8,
     "defaultGround": "T650",
-    "bgm": "palaceNorth.mp3",
+    "bgm": "palaceNorth.opus",
     "firstArrive": [],
     "eachArrive": [],
     "parallelDo": "",
diff --git a/public/project/floors/MT84.js b/public/project/floors/MT84.js
index cada03a..cc00ad0 100644
--- a/public/project/floors/MT84.js
+++ b/public/project/floors/MT84.js
@@ -12,7 +12,7 @@ main.floors.MT84=
     "images": [],
     "ratio": 8,
     "defaultGround": "T650",
-    "bgm": "palaceNorth.mp3",
+    "bgm": "palaceNorth.opus",
     "firstArrive": [],
     "eachArrive": [],
     "parallelDo": "",
diff --git a/public/project/floors/MT85.js b/public/project/floors/MT85.js
index b47e1de..ff9cc9a 100644
--- a/public/project/floors/MT85.js
+++ b/public/project/floors/MT85.js
@@ -12,7 +12,7 @@ main.floors.MT85=
     "images": [],
     "ratio": 8,
     "defaultGround": "T650",
-    "bgm": "palaceNorth.mp3",
+    "bgm": "palaceNorth.opus",
     "firstArrive": [],
     "eachArrive": [],
     "parallelDo": "",
diff --git a/public/project/floors/MT86.js b/public/project/floors/MT86.js
index 566fba5..8a70f7c 100644
--- a/public/project/floors/MT86.js
+++ b/public/project/floors/MT86.js
@@ -12,7 +12,7 @@ main.floors.MT86=
     "images": [],
     "ratio": 8,
     "defaultGround": "T650",
-    "bgm": "palaceNorth.mp3",
+    "bgm": "palaceNorth.opus",
     "firstArrive": [],
     "eachArrive": [],
     "parallelDo": "",
diff --git a/public/project/floors/MT87.js b/public/project/floors/MT87.js
index b9dc5d3..febbc55 100644
--- a/public/project/floors/MT87.js
+++ b/public/project/floors/MT87.js
@@ -12,7 +12,7 @@ main.floors.MT87=
     "images": [],
     "ratio": 8,
     "defaultGround": "T650",
-    "bgm": "palaceNorth.mp3",
+    "bgm": "palaceNorth.opus",
     "firstArrive": [],
     "eachArrive": [],
     "parallelDo": "",
diff --git a/public/project/floors/MT88.js b/public/project/floors/MT88.js
index 180f213..2496d48 100644
--- a/public/project/floors/MT88.js
+++ b/public/project/floors/MT88.js
@@ -12,7 +12,7 @@ main.floors.MT88=
     "images": [],
     "ratio": 8,
     "defaultGround": "T650",
-    "bgm": "palaceNorth.mp3",
+    "bgm": "palaceNorth.opus",
     "firstArrive": [],
     "eachArrive": [],
     "parallelDo": "",
diff --git a/public/project/floors/MT89.js b/public/project/floors/MT89.js
index 85b6119..40a2397 100644
--- a/public/project/floors/MT89.js
+++ b/public/project/floors/MT89.js
@@ -12,7 +12,7 @@ main.floors.MT89=
     "images": [],
     "ratio": 8,
     "defaultGround": "T650",
-    "bgm": "palaceNorth.mp3",
+    "bgm": "palaceNorth.opus",
     "firstArrive": [],
     "eachArrive": [],
     "parallelDo": "",
diff --git a/public/project/floors/MT9.js b/public/project/floors/MT9.js
index 351062f..99c5e82 100644
--- a/public/project/floors/MT9.js
+++ b/public/project/floors/MT9.js
@@ -12,7 +12,7 @@ main.floors.MT9=
     "images": [],
     "ratio": 1,
     "defaultGround": "grass",
-    "bgm": "grass.mp3",
+    "bgm": "grass.opus",
     "firstArrive": [],
     "eachArrive": [],
     "parallelDo": "",
diff --git a/public/project/floors/MT90.js b/public/project/floors/MT90.js
index 86950bf..8eb823f 100644
--- a/public/project/floors/MT90.js
+++ b/public/project/floors/MT90.js
@@ -12,7 +12,7 @@ main.floors.MT90=
     "images": [],
     "ratio": 8,
     "defaultGround": "T650",
-    "bgm": "palaceNorth.mp3",
+    "bgm": "palaceNorth.opus",
     "firstArrive": [],
     "eachArrive": [],
     "parallelDo": "",
diff --git a/public/project/floors/MT91.js b/public/project/floors/MT91.js
index 970132c..c9786e9 100644
--- a/public/project/floors/MT91.js
+++ b/public/project/floors/MT91.js
@@ -12,7 +12,7 @@ main.floors.MT91=
     "images": [],
     "ratio": 8,
     "defaultGround": "T650",
-    "bgm": "palaceNorth.mp3",
+    "bgm": "palaceNorth.opus",
     "firstArrive": [],
     "eachArrive": [],
     "parallelDo": "",
diff --git a/public/project/floors/MT92.js b/public/project/floors/MT92.js
index d0c38dc..194cc1a 100644
--- a/public/project/floors/MT92.js
+++ b/public/project/floors/MT92.js
@@ -12,7 +12,7 @@ main.floors.MT92=
     "images": [],
     "ratio": 8,
     "defaultGround": "T650",
-    "bgm": "palaceNorth.mp3",
+    "bgm": "palaceNorth.opus",
     "firstArrive": [],
     "eachArrive": [],
     "parallelDo": "",
diff --git a/public/project/floors/MT93.js b/public/project/floors/MT93.js
index 6f529c0..9e8ed03 100644
--- a/public/project/floors/MT93.js
+++ b/public/project/floors/MT93.js
@@ -12,7 +12,7 @@ main.floors.MT93=
     "images": [],
     "ratio": 8,
     "defaultGround": "T650",
-    "bgm": "palaceNorth.mp3",
+    "bgm": "palaceNorth.opus",
     "firstArrive": [],
     "eachArrive": [],
     "parallelDo": "",
diff --git a/public/project/floors/MT94.js b/public/project/floors/MT94.js
index 9dceab0..7a4b09f 100644
--- a/public/project/floors/MT94.js
+++ b/public/project/floors/MT94.js
@@ -12,7 +12,7 @@ main.floors.MT94=
     "images": [],
     "ratio": 8,
     "defaultGround": "T650",
-    "bgm": "palaceNorth.mp3",
+    "bgm": "palaceNorth.opus",
     "firstArrive": [],
     "eachArrive": [],
     "parallelDo": "",
diff --git a/public/project/floors/MT95.js b/public/project/floors/MT95.js
index dc48f0f..34cab9b 100644
--- a/public/project/floors/MT95.js
+++ b/public/project/floors/MT95.js
@@ -12,7 +12,7 @@ main.floors.MT95=
     "images": [],
     "ratio": 8,
     "defaultGround": "T650",
-    "bgm": "palaceNorth.mp3",
+    "bgm": "palaceNorth.opus",
     "firstArrive": [],
     "eachArrive": [],
     "parallelDo": "",
diff --git a/public/project/floors/MT96.js b/public/project/floors/MT96.js
index 346c508..8e5611b 100644
--- a/public/project/floors/MT96.js
+++ b/public/project/floors/MT96.js
@@ -12,7 +12,7 @@ main.floors.MT96=
     "images": [],
     "ratio": 8,
     "defaultGround": "T650",
-    "bgm": "palaceNorth.mp3",
+    "bgm": "palaceNorth.opus",
     "firstArrive": [],
     "eachArrive": [],
     "parallelDo": "",
diff --git a/public/project/floors/MT97.js b/public/project/floors/MT97.js
index 8ed9045..96bab0b 100644
--- a/public/project/floors/MT97.js
+++ b/public/project/floors/MT97.js
@@ -12,7 +12,7 @@ main.floors.MT97=
     "images": [],
     "ratio": 8,
     "defaultGround": "T650",
-    "bgm": "palaceNorth.mp3",
+    "bgm": "palaceNorth.opus",
     "firstArrive": [],
     "eachArrive": [],
     "parallelDo": "",
diff --git a/public/project/floors/empty.js b/public/project/floors/empty.js
index 6390299..56dad5b 100644
--- a/public/project/floors/empty.js
+++ b/public/project/floors/empty.js
@@ -12,7 +12,7 @@ main.floors.empty=
     "images": [],
     "ratio": 1,
     "defaultGround": "grass",
-    "bgm": "mount.mp3",
+    "bgm": "mount.opus",
     "weather": [
         "sun",
         8
diff --git a/public/project/floors/sample0.js b/public/project/floors/sample0.js
index 7ffc756..11b6df9 100644
--- a/public/project/floors/sample0.js
+++ b/public/project/floors/sample0.js
@@ -8,7 +8,7 @@ main.floors.sample0=
     "canUseQuickShop": true,
     "defaultGround": "ground",
     "images": [],
-    "bgm": "bgm.mp3",
+    "bgm": "bgm.opus",
     "ratio": 1,
     "map": [
     [  0,  0,220,  0,  0, 20, 87,  3, 58, 59, 60, 61, 64],
diff --git a/public/project/floors/snowShop.js b/public/project/floors/snowShop.js
index f80f89f..c62880a 100644
--- a/public/project/floors/snowShop.js
+++ b/public/project/floors/snowShop.js
@@ -12,7 +12,7 @@ main.floors.snowShop=
     "images": [],
     "ratio": 8,
     "defaultGround": "T640",
-    "bgm": "winterTown.mp3",
+    "bgm": "winterTown.opus",
     "firstArrive": [],
     "eachArrive": [],
     "parallelDo": "",
diff --git a/public/project/floors/snowTown.js b/public/project/floors/snowTown.js
index 9479644..b80e07d 100644
--- a/public/project/floors/snowTown.js
+++ b/public/project/floors/snowTown.js
@@ -12,7 +12,7 @@ main.floors.snowTown=
     "images": [],
     "ratio": 8,
     "defaultGround": "T580",
-    "bgm": "winterTown.mp3",
+    "bgm": "winterTown.opus",
     "firstArrive": null,
     "eachArrive": [],
     "parallelDo": "",
diff --git a/public/project/floors/tower1.js b/public/project/floors/tower1.js
index fd80ee3..17cf16c 100644
--- a/public/project/floors/tower1.js
+++ b/public/project/floors/tower1.js
@@ -12,7 +12,7 @@ main.floors.tower1=
     "images": [],
     "ratio": 2,
     "defaultGround": "T526",
-    "bgm": "tower.mp3",
+    "bgm": "tower.opus",
     "firstArrive": [
         "\t[野蛮人]\b[up,hero]这里，便是智慧之塔了",
         "注意破墙镐在本区结束后会全部删除，请在本区域全部用完"
diff --git a/public/project/floors/tower2.js b/public/project/floors/tower2.js
index 016b03a..351b36c 100644
--- a/public/project/floors/tower2.js
+++ b/public/project/floors/tower2.js
@@ -12,7 +12,7 @@ main.floors.tower2=
     "images": [],
     "ratio": 2,
     "defaultGround": "T526",
-    "bgm": "tower.mp3",
+    "bgm": "tower.opus",
     "firstArrive": null,
     "eachArrive": [],
     "parallelDo": "",
diff --git a/public/project/floors/tower3.js b/public/project/floors/tower3.js
index db7268f..fdb388c 100644
--- a/public/project/floors/tower3.js
+++ b/public/project/floors/tower3.js
@@ -12,7 +12,7 @@ main.floors.tower3=
     "images": [],
     "ratio": 2,
     "defaultGround": "T526",
-    "bgm": "tower.mp3",
+    "bgm": "tower.opus",
     "firstArrive": [],
     "eachArrive": [],
     "parallelDo": "",
diff --git a/public/project/floors/tower4.js b/public/project/floors/tower4.js
index 5bde525..5a9153c 100644
--- a/public/project/floors/tower4.js
+++ b/public/project/floors/tower4.js
@@ -12,7 +12,7 @@ main.floors.tower4=
     "images": [],
     "ratio": 2,
     "defaultGround": "T526",
-    "bgm": "tower.mp3",
+    "bgm": "tower.opus",
     "firstArrive": [],
     "eachArrive": [],
     "parallelDo": "",
diff --git a/public/project/floors/tower5.js b/public/project/floors/tower5.js
index 170fec6..5056d0e 100644
--- a/public/project/floors/tower5.js
+++ b/public/project/floors/tower5.js
@@ -12,7 +12,7 @@ main.floors.tower5=
     "images": [],
     "ratio": 2,
     "defaultGround": "T526",
-    "bgm": "tower.mp3",
+    "bgm": "tower.opus",
     "firstArrive": [],
     "eachArrive": [],
     "parallelDo": "",
diff --git a/public/project/floors/tower6.js b/public/project/floors/tower6.js
index 0cea85e..5708009 100644
--- a/public/project/floors/tower6.js
+++ b/public/project/floors/tower6.js
@@ -12,7 +12,7 @@ main.floors.tower6=
     "images": null,
     "ratio": 2,
     "defaultGround": "T526",
-    "bgm": "tower.mp3",
+    "bgm": "tower.opus",
     "firstArrive": null,
     "eachArrive": [],
     "parallelDo": "",
diff --git a/public/project/floors/tower7.js b/public/project/floors/tower7.js
index eb98346..c7f8ac5 100644
--- a/public/project/floors/tower7.js
+++ b/public/project/floors/tower7.js
@@ -19,7 +19,7 @@ main.floors.tower7=
     ],
     "ratio": 2,
     "defaultGround": "T526",
-    "bgm": "tower.mp3",
+    "bgm": "tower.opus",
     "firstArrive": [
         {
             "type": "hideStatusBar",
diff --git a/src/source/data.d.ts b/src/source/data.d.ts
index 3bb17fa..1163c7c 100644
--- a/src/source/data.d.ts
+++ b/src/source/data.d.ts
@@ -211,25 +211,26 @@ type SoundIds =
 
 type BgmIds =
     | 'beforeBoss.opus'
-    | 'cave.mp3'
-    | 'escape.mp3'
-    | 'escape2.mp3'
-    | 'grass.mp3'
+    | 'beforeNight.opus'
+    | 'cave.opus'
+    | 'chapter2ED.opus'
+    | 'escape.opus'
+    | 'escape2.opus'
+    | 'grass.opus'
     | 'mount.opus'
-    | 'night.mp3'
-    | 'output6.ogg'
-    | 'palaceCenter.mp3'
-    | 'palaceNorth.mp3'
-    | 'palaceSouth.mp3'
-    | 'plot1.mp3'
-    | 'road.mp3'
-    | 'title.mp3'
-    | 'tower.mp3'
-    | 'towerBoss.mp3'
-    | 'towerBoss2.mp3'
-    | 'towerBoss3.mp3'
-    | 'winter.mp3'
-    | 'winterTown.mp3'
+    | 'night.opus'
+    | 'palaceCenter.opus'
+    | 'palaceNorth.opus'
+    | 'palaceSouth.opus'
+    | 'plot1.opus'
+    | 'road.opus'
+    | 'title.opus'
+    | 'tower.opus'
+    | 'towerBoss.opus'
+    | 'towerBoss2.opus'
+    | 'towerBoss3.opus'
+    | 'winter.opus'
+    | 'winterTown.opus'
 
 type FontIds =
     | 'normal'