There is a page with some general information on digital soundcards at www.digitalexperience.com/cards.html

Here's the big list of all linux-supported soundcards.
If you know of a new one, please do ALL of the following steps:

0. Go to the UserOptions and set your !UserName.
   That way we'll know who made the change.
    Otherwise, the change is attributed to your
    IP address (ridiculous, I know).

0. Make sure the card in question is not already listed here.

0. If it's not already here, add an entry to this list with a WikiName for
   the soundcard.

0. Edit the new page created for the new WikiName.

0. Decide if the card should go in one of the 
   existing categories (see LinuxSoundcards)

Eventually this will all be done from one form, but for now,
PLEASE help make this page maintainable and do ALL of the above.

Anyway, once again... here's the list of everything.

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* Creamware TripleDAT hardware has an unofficial driver that may or may not work, here.

* CreamwarePULSAR was rumored to get linux support. It seems like it is still **not supported**.

* Creative SoundblasterAWEGold

* Creative SoundBlasterPCI aka SoundBlaster128

* Creative SoundBlasterLive

* Darla: see EchoEvent

* DIYDigitalCards, homemade things for the adventurous

* EchoEvent cards are **not supported**.

* Ensoniq AudioPCI

* Gina: see EchoEvent

* GuillemotHomeStudio 64

* GuillemotISIS is **not supported**.

* HoontechSoundtrack

* HoontechFourDWave

* The LameHTCard, HT 1869, also known as CM 8330, also known as PC Chips "Sound Pro"

* Layla: see EchoEvent

* MaudioDelta - the M-Audio (Midiman) Delta series, good pro-level stuff with ALSA drivers.

* SonorusSTUDIO - questionable

* TerratecCards - questionable

* Trident 4DWave: see HoontechFourDWave

* TurtleBeachPinnacle or Fiji

* TurtleBeachMalibu and other cards based on the CS-4237B codec.

* RMEHammerfall , pretty much the top dog pro-quality linux audio interface at the moment.

* ZefiroZA 2

* SgiDa 1100 is **not supported**.