save project

db.py

@@ -57,6 +57,14 @@ while True:
             pygame.mixer.music.play()
             play_nutton = stop_img
             clixk = 0
+        if x > 420 and x < 520 and y > 350 and y < 400:
+            num+=1
+            if  num = len(music_list) -1
+                num = 0
+            pygame.mixer.music.load(path+"\\"+music_list[num])
+            pygame.mixer.music.play()
+            play_nutton = stop_img
+            clixk = 0
             
     if pygame.mixer.music.get_busy() == False：
         num += 1