You might want to take a look at M-Audio's new Sonica. It might be of some benefit to you.

http://www.midiman.net/

There is a long thread at AVSForum with some good info on the Sonica. Cliff Watson, from DigitalConnection, has some insights in his posts to the thread.

http://www.avsforum.com/avs-vb/showthread.php?s=a392e301b982f10184618b656fc41144&threadid=153140&highlight=sonica