CS.RIN.RU - Steam Underground Community

specially i searched for a unpack tool for this awesome Game.
Only i found was this:
http://www.xboxhacker.org/index.php?PHP ... pic=166.40

I can't use it. Don't know what exactly to do/How to use it......
I have the PC Version of the Game and i want ONLY the Complete Music
(Ingame not offical OST)
specially i serached for the Main Menu Music (On OST CD it is the track "Two Worlds")
but without success.....

Can someone help with it?