I love the Divine Divinity music too. The other day I was listening to it all the way through with some psychedelic patterns on Windows Media player. My favorite tracks are...
5. The Dwarven Halls Music -- I have never quite heard a track like this.
4. The Elven Village Music
3. A piece called "Shame and suffering" or something like that -- it plays when you are in the plague quarantine area.
2. "A Forest Dark and Deep" -- I can't remember exactly where it plays though.
1. Scorching Wind (the song that plays when you arrive in the Wasteland). I can listen to that track about 10 times in a row and not get sick of it.
If you like video game music, then you might like the music in Hitman 2: Silent Assassin. Jesper Kyd did the soundtrack for that game and for Freedom Fighters -- his work is fantastic too.