PM a guy named Lundquist. He is responsible for that unofficial soundtrack. The team is making one for their own, complete with the dynamic music, so you may or may want to wait for them to release it and ask for permission, but I have a feeling they'd wanna keep that until the mod's release. It is 90% through by the way...
"The Force is strong with Katarn...." - Darth Vader, Star Wars: Dark Forces