USB Audio support

[Darth.Severus]

Thanks, I've still read about that package. But I'm using RC3, not sure if my kernel (15.8) supports Hifiberry. I think I'll need a newer version like 16 or 17.

So I would need:
- Testing or Unstable version of xbian
- xbian-package-xbmc-alsa
- other alsa stuff?

and cause I have no Internet with my xbian, I would have to download this in a Internet café and then compile it. Not sure how to do that: Just download the github repo and compile? Not sure if I'm able to do that, not sure if the needed amount of time is acceptable, not sure if it really helps.