Hi Takashi.
I've dusted of the snd-galaxy Aztech Sound Galaxy driver that I posted back in 2007. Have not been around for a long time but found some time again currently. Earlier this year I was contacted about the driver so there's still at least some demand for it.
It is the same version as posted way back then:
http://www.spinics.net/lists/alsa-devel/msg09791.html
only brought up to date to 2.6.35, and with lib.c folded back in to fix the remaining problem from the earlier post.
It's also been tested again on all previously tested cards and two new ones. Everything still found working. More information in the changelog accompanying the patch below.
Cleaning up and moving AZT2320 to the galaxy directory as well would be a next step, as would removing the old sgalaxy driver.
The patch has been generated against 2.6.35 and I've just now checked that it applies cleanly to current git. Hope that'll do since I'm not really setup to work against alsa-driver or anything. When updating the driver I noticed fairly little seems to have happened inside sound/isa anyway over the last few years, so I assumed it would be okay.
Hope it can be applied as is, but I have some time to deal with problems currently.
@ Ram: Do you even still have the card? ;-)
Regards, Rene