Would this board work well as a the basis for a
dedicated, perhaps
portable, digital recorder?
I think the key question is: drivers. With all the components on board, if
there aren't GPL drivers available then I'd steer clear. You don't need
another NVIDIA-type situation.
As for recording, I think stereo plus midi is feasible, but what about more
than two tracks? Audacity is lightweight, and seems to need a fast disk more
than anything else. If you want two tracks at a time plus overdubs, that
might be the way to go.
Cheers
Daniel