Attached is a lua based list of most of the music from the games (portal, hl1/hl2, CS:S) that you can use. Simply stick into
Steam\steamapps\*username*\garrysmod\garrysmod\lua\autorun\clientThat will make it load on any server with soundemitters, including the one of BB.
http://www.xeraans.com/files/SoundEmitterPresets.lua(right click-save as)
