save project

my_music.py

@@ -54,7 +54,7 @@ while True:
     if pygame.mixer.music.get_busy() == False:
         n+=1
         if n>len(ml)-1:
-            pygame.mixer.music.load(ml[num])
+            pygame.mixer.music.load(ml[n])
             pygame.mixer.music.play()
 
     # 绘制画面