soundtrax

Hey guys, I was testing Nero SoundTrax and found it very interesting. 8) Now, I wanted to mix two or more songs in one single file, (or one whole song, remember how the radio stations in GTA are mixed together?) like when the first song is finished playing, the second one starts immediately...

Can anyone tell me from which site can i download NFS Underground 2 soundtrax or is there any software to extract them or if anyone has them, can u mail it to me???