My bad, I tried the MP3 file I uploaded, but it didn't seem to work in-game. I wrote "mp3 play sound\misc\ctwinnar.mp3" in console, and it played fine. But it won't play when CT wins. It's converted to MP3 with Lame, I also tried Nero's MP3Pro, but didn't work either. Should it be mono maybe?
I have reuploaded the sound to wav now, since that works
Anyways, looking forward to your huge update
Maybe it will fix this MP3 problem?