save project

my_music.py

@@ -57,6 +57,13 @@ while True:
                         play_button = play_img
                         pygame.mixer.music.pause()
                 if x>120 and x<220 and y>350 and y<400:
+                    num -= 1
+                    if num < 0 :
+                        num = len(music_list) - 1
+                    pygame.mixer.music.load(path+'\\'+music_list[num])
+                    pygame.mixer.music.play()
+                    click = 0
+                    play_button = play_img
                     
     if pygame.mixer.music.get_busy() == False:
         num +=1