They're great for portability/price, according that you don't expect too
much power from them. I didn't take mine specifically for doing audio but if
I get it running smoothly it's going to be a very nice little on the go/gig
machine. Definetly worth spending a few hours on understanding how to get
the best out of it.
A friend of mine got the high-end eeePC for Christmas,
enjoys it very
much, but he doesn't do audio stuff with it. He has his server hooked
into his home audio system and only uses the eeePC to run his server
desktop remotely and play his music collection that way.