use try in case pygame isnt installed

plugins/TorrentNotification/__init__.py

@@ -149,7 +149,11 @@ class TorrentNotification:
     
     def play_sound(self):
         if not deluge.common.windows_check():
+            try:
                 import pygame
+            except:
+                pass
+            else:
                 import os.path
                 import sys
                 pygame.init()