How to get the music from the game?

I tried to burn the music files that I converted with sndutil.
But it stops burning because the tracks I converted were all mono tracks.
What fault did i make?
How can i convert the music files into stereo files?
I can play them with winamp but i can't burn them.

Thanks

PS: Sorry for my english

use kazaa and download them individualy as mp3's..

they'll sound better and be real mp3's.