给你fix点

main.py

@@ -1,7 +1,6 @@
 import threading
 from typing import Callable
 
-# from arcade import load_sound, play_sound, stop_sound
 from pyglet import media as pyglet_media
 
 from tkinter import *
@@ -541,14 +540,25 @@ def countdown():
 
     def finishing():
         global bigback_photo
+        sound = pyglet_media.load("support/sound.mp3")
+        player = sound.play()
         for child in root.grid_slaves():
             child.grid_remove()
         tkinter.Label(text="时间到了", font=("华文行楷", 50)).grid(
             column=0, columnspan=3, row=1, sticky="nsew"
         )
+
+        def tmp():
+            player.pause()
+            welcome()
+
+        def tmp2():
+            player.pause()
+            schedule("fromclean")
+
         cancel = tkinter.Button(
             text="确定",
-            command=lambda: stop_sound(player) | welcome(),
+            command=tmp,
             font=("宋体", 30),
             bg="#4472c4",
             activebackground="#4472c4",
@@ -557,7 +567,7 @@ def countdown():
         cancel.grid(column=0, row=3, sticky="nsew")
         back = tkinter.Button(
             image=bigback_photo,
-            command=lambda: stop_sound(player) | schedule("fromclean"),
+            command=tmp2,
             font=("宋体", 30),
             height=60,
             bg="#4472c4",
@@ -565,8 +575,6 @@ def countdown():
             fg="white",
         )
         back.grid(column=2, row=3, sticky="nsew")
-        sound = load_sound("support/sound.mp3")
-        player = play_sound(sound)
 
     def start():
         remain = hour * 60 * 60 + minute * 60 + second