diff --git a/public/libs/control.js b/public/libs/control.js
index e1736af..b6b2177 100644
--- a/public/libs/control.js
+++ b/public/libs/control.js
@@ -3038,13 +3038,6 @@ control.prototype.getPlayingSounds = function (name) {
 ////// 检查bgm状态 //////
 control.prototype.checkBgm = function () {
     // see src/module/fallback/audio.ts
-    return;
-    const bgm = Mota.require('var', 'bgm');
-    if (bgm.disable) {
-        bgm.pause();
-    } else if (!bgm.playing) {
-        bgm.changeTo(bgm.now ?? main.startBgm);
-    }
 };
 
 ///// 设置屏幕放缩 //////
diff --git a/src/ui/bgmList.vue b/src/ui/bgmList.vue
index 1d02372..1b7f892 100644
--- a/src/ui/bgmList.vue
+++ b/src/ui/bgmList.vue
@@ -48,7 +48,7 @@ interface Bgm {
 
 const list = bgm as Partial<Record<BgmIds, Bgm>>;
 
-const selected = ref<BgmIds>('title.mp3');
+const selected = ref<BgmIds>('title.opus');
 
 const content = computed(() => {
     return eval('`' + splitText(list[selected.value]!.desc) + '`');
diff --git a/src/ui/start.vue b/src/ui/start.vue
index fe2fca4..e9c215f 100644
--- a/src/ui/start.vue
+++ b/src/ui/start.vue
@@ -328,7 +328,7 @@ onMounted(async () => {
     resize();
 
     soundChecked.value = mainSetting.getValue('audio.bgmEnabled', true);
-    bgmController.play('title.mp3');
+    bgmController.play('title.opus');
 
     start.style.opacity = '1';
     if (played) {