I just got reacquainted with this soundtrack after several years and there's something that I've always wondered about it. I feel like there are a couple of things that could possibly be sampled or sourced from "The Downward Spiral" (the song). I think the screams on the opening track could be from that and the whispering on track 4 (or track 3 if you aren't counting from the data track) sounds like it could be a garbled version of the "problems do have solutions, you know" part (Coil also did something similar with that part for "The Downward Spiral (The Bottom)" from FDTS).