prevent sound by stopping the mixer in the launcher update method

Playzing.py

@@ -132,6 +132,9 @@ class Playzing(pgfw.Game):
     def update(self):
         pgfw.Animation.update(self)
 
+        # Temporary fix: this stops audio when the game is quit and prevents spawning multiple BGM when game is relaunched
+        pygame.mixer.stop()
+
         # Erase the center of the screen if enabled
         if not self.configuration.get("logo", "trail"):
             erase_rect = self.logo_text.location.copy()