diff --git a/README.md b/README.md
index e27c639..33bcd59 100644
--- a/README.md
+++ b/README.md
@@ -207,4 +207,18 @@ class MLPlay:
     - `rank`：排名
     - `passed`：是否通關
 
----
\ No newline at end of file
+---
+
+# 參考資源
+- 音效
+    1. https://soundeffect-lab.info/sound/anime/
+- 背景音樂
+    1. https://www.motionelements.com/zh-hant/stock-music-28190007-bossa-nova-short-loop
+- 圖片
+    1. 魷魚 https://illustcenter.com/2022/07/03/rdesign_1659/
+    2. 湯匙 https://illustcenter.com/2021/11/24/rdesign_6275/
+    3. 薯條 https://illustcenter.com/2021/11/16/rdesign_5098/
+    4. 空罐 https://illustcenter.com/2021/11/19/rdesign_5772/
+    5. 魚1 https://illustcenter.com/2021/12/22/rdesign_8914/
+    6. 魚2 https://illustcenter.com/2021/10/28/rdesign_3149/
+    7. 蝦子 https://illustcenter.com/2021/10/28/rdesign_3157/
\ No newline at end of file
diff --git a/asset/music/bgm.mp3 b/asset/music/bgm.mp3
new file mode 100644
index 0000000..856c91a
Binary files /dev/null and b/asset/music/bgm.mp3 differ
diff --git a/asset/music/bgm.wav b/asset/music/bgm.wav
deleted file mode 100644
index f65ea6f..0000000
Binary files a/asset/music/bgm.wav and /dev/null differ
diff --git a/game_config.json b/game_config.json
index 2c8e26f..d0586ac 100644
--- a/game_config.json
+++ b/game_config.json
@@ -1,6 +1,6 @@
 {
   "game_name": "swimming-squid",
-  "version": "2.4a5",
+  "version": "2.4a6",
   "url": "https://github.com/PAIA-Playful-AI-Arena/swimming-squid",
   "description": "這是一個魷魚吃東西小遊戲，除了讓你熟習所有基本操作，也是 PAIA 的遊戲教學範例",
   "logo": [
diff --git a/src/sound_controller.py b/src/sound_controller.py
index 4bdc1a6..e86d85e 100644
--- a/src/sound_controller.py
+++ b/src/sound_controller.py
@@ -1,3 +1,5 @@
+import traceback
+
 import pygame
 
 from .env import *
@@ -20,7 +22,7 @@ class SoundController():
     def load_sounds(self):
         try:
             pygame.mixer.init()
-            pygame.mixer.music.load(path.join(MUSIC_PATH, "bgm.wav"))
+            pygame.mixer.music.load(path.join(MUSIC_PATH, "bgm.mp3"))
             pygame.mixer.music.set_volume(0.6)
             self._eating_good = pygame.mixer.Sound(path.join(SOUND_PATH, "eat_good_food.mp3"))
             self._eating_bad = pygame.mixer.Sound(path.join(SOUND_PATH, "eat_bad_food.mp3"))
@@ -28,8 +30,9 @@ class SoundController():
             self._fail = pygame.mixer.Sound(path.join(SOUND_PATH, "fail.mp3"))
             self._lv_up = pygame.mixer.Sound(path.join(SOUND_PATH, "lv_up.mp3"))
             self._lv_down = pygame.mixer.Sound(path.join(SOUND_PATH, "lv_down.mp3"))
-        except Exception:
+        except Exception as e :
             self._is_sound_on = False
+            traceback.print_exc()
 
     @sound_enabled
     def play_music(self):