KRP kart WAV files

[nmpcs]

I read that Evo was having some trouble with the sounds of the Yamaha KT100 engine that he was making, so I thought that the original kart WAV files could be used and modelled.
So, there I went to open one of the wav files and I just couldn't.
I don't know a single program that can open those files.
I've tried Windows Media player, VLC player, Audacity, Vegas, etc... and nothing
Do any of you guys know how to open those files?