This was brought up in IRC and I dug up some links that were posted here. Baldur's Gate music: http://www.3ddownloads.com/forge/forgottenwars/audio/BG2Music.zip
(original EfU post, found by Sinister Seneschal) https://efupw.com/efu1-forum/topic/18/189/something-awesome/index.html
Also, this site has tons of game music. You can find Arcanum, NWN, BG, IWD music here. http://gh.ffshrine.org/soundtracks.php
I recommend downloading as much as you can because these sites don't last long and in time, it's going to be impossible to find these wonderful soundtracks. Enjoy.