From IMDB:
Led Zepplin threatened legal action against a track sounding slightly like “Kashmir”. The offending song has been removed from 4 points in the video. Street drug dealing just before Keitel arrives to buy crack: now no music at all. Nun’s rape originally to backing track “signifying rapper”: now church organ music. Long tracking shot following Keitel into the hospital: now no music at all. End credits: now have Abel Ferrara himself singing.