Actually you should ask IceFire. He was the one who put the music into the game back in the good old days if I remember correctly. Although at one point Darkblade might have updated TBP music tracks, I don't remember if any changes were actually made. PM both.
See, IP was the last project leader but he was also the fourth. For the record, I was third and IceFire second. Incidentally I've forgotten who founded TBP, much to my dismay. Much stuff was done before IP took control of the project.