t-break has posted details on how to enable true 3D environmental audio in Quake III Arena on SBLive! based cards. Q3A uses A3D 2.0, but by downloading the A2D files from Aureal (which were created to allow A3D audio to play via DirectSound 3D on non-A3D cards) you can get full EAX output. Directions as well as a direct download link can be found on t-break.