Made by bratka-x.
I'm sucessfully using this mod on:
http://www.bratka.kissme.in
(plz visit it and support me;)

Instructions:

1.Put the files in correct folders on your server.
2.Open file "infusions/user_info_panel/user_info_panel.php"
3.Find 'http://www.site.com/audio/message.mp3' on line 24 and correct www.site.com to your site's adress.
4.Find 'http://www.site.com/images/message.gif' and correct www.site.com to your site's adress.
5.Save the file and upload again.


You can change these files:
message.mp3
message.gif
noav.jpg

Enjoy;) When you got PM, it'll play sound and show message image. Also it will show your avatar on user_info panel.

(Sorry for bad English)