Older Creative Sound Cards (Audigy & Audigy 2) Work Fine With Linux
It is true that the Creative X-Fi card does not work with Linux, but practically every other Sound Blaster sound card does work with Linux. I have both an Audigy and Audigy 2 on the two Linux machines at my home, both in dual boot setups. One has Windows XP and the other is Windows Vista. None the less, you can find really good deals on older Creative sound cards. The Audigy 2 I have is reconditioned and cost me only $30. Think about it and put the X-Fi away as someday it will work with Linux, at least after the X-Fi/Plus/Gold/Platinum II comes out (ha-ha).