hey, linux user here too. have you guys tried asiowine? It's an addition to wine that lets you choose asio drivers in the windows app. I've got lots of stuff to work under this, haven't tried biab tho. I'm ubuntu studio-ifying a notebook tomorrow, and am looking forward to try out the demo. Search for asiowine and you should find it fairly easily. I remember you had to compile it yourself, but it wasn't too hard.

A linux port would be awsome, but I think a major UI overhaul is called for before anything gets ported. (so it suites the "slimmer and better" linux motto) Not that it would happen..