save project

my_music.py

@@ -68,8 +68,8 @@ while True:
                     click=0
                 if x>420 and x<520 and y>350 and y<400:
                     num-=1
-                    if num<0:
-                        num=len(music_list)-1
+                    if num>len(music_list)-1:
+                        num=0
                     pygame.mixer.music.load(path+"\\"+music_list[num])
                     pygame.mixer.music.play()
                     play_button=stop_img