"Pirate voice" lost in upgrade

I know this sounds silly, but when i upgraded my operating system from XP to Win 7 recently, I had to re-install avast!. That went smoothly, but my notifications from avast! no longer use the “aaargh” pirate voice. How do I get it back? I don’t see it under “settings”. Thanks.

https://blog.avast.com/tag/audio-skins/