modprobe snd-usb-audio
I still have libs from my older kernel, strange
[root@PBLinux ~]# locate snd-usb-audio
/lib/modules/2.6.38/kernel/sound/usb/snd-usb-audio.ko.gz
/lib/modules/2.6.38.3/kernel/sound/usb/snd-usb-audio.ko
I peeked into my /lib/modules/2.6.38.3/modules.usbmap and /lib/modules/2.6.38.3/modules.alias which I believe is where the product and vendor info ties to which driver, then driver in most cases just loads, some soundcards will also require extra info in /etc/modprobe.d/modprobe.conf to work properly, and maybe something in /etc/asound.conf, but you haven't got to those stages (no module loaded).
I have hacked kernel source to get a video card working, a new card had different product id so put it in the alias of the kernel source and compiled, in your case that would be
linux-2.6.38.3/sound/usb/snd-usb-audio.mod.c
or whatever kernel source you have.
But you can't do any of that, you got an Oxsemi NAS and only WarheadsSE can compile.
Plus it might take a few attempts
Then again, WarheadsSE maybe right, I am just a (sometimes lucky) dabbler, he is a professional
BUT, go to the ver last post here
http://forums.gentoo.org/viewtopic-t-501671.htmlThis looks like a possible solution? I have never tried this sort of thing, one thing wrong is any file in /etc/modprobe.d must end in .conf
Also reboot befor you try