save project

my_music.py

@@ -64,9 +64,9 @@ while True:
                     click = 0
                     click = 0
                     play_button = stop_img
                     play_button = stop_img
                 if x > 420 and x < 520 and y > 350 and y < 400:
                 if x > 420 and x < 520 and y > 350 and y < 400:
-                    num -= 1
-                    if num < 0:
-                        num = len(ml) - 1
+                    num += 1
+                    if num > len(ml) - 1:
+                        num = 0
                     pygame.mixer.music.load(path + '\\' + ml[num])
                     pygame.mixer.music.load(path + '\\' + ml[num])
                     pygame.mixer.music.play()
                     pygame.mixer.music.play()
                     click = 0
                     click = 0