M-Audio has been updating their drivers in spades. I've been pestering them to add OpenAL support to the Sonica Theater since I read that their desktop PCI cards had this tech, but the USB cards did not. They said they were working on it, and sure enough, they've posted two new Sonica Theater updates: one for 10.3.9 and a "prliminary" driver for Tiger. OpenAL enables discrete multichannel sound from games and other software. So now PowerBook gamers can finally have 3D multichannel sound
http://m-audio.com/index.php?do=support.drivers
So which games feature OpenAL?