save project

my_music.py

@@ -60,7 +60,7 @@ while True:
                     pygame.mixer.music.play()
                 if x>420 and x<520 and y>350 and y<450:
                     num+=1
-                    if num < 0 :
+                    if num > len(music_list)-1 :
                         num=len(music_list)-1
                     click=0
                     play_button=stop_img