Johnx and I have A2DP working somewhat decently... See this thread for details:
http://internettablettalk.com/forums...ad.php?t=13468
His first post goes over setting it up, and my post on page 5 has a .deb for a patched mplayer that fixes playback stuttering, and a few instructions to get it working correctly in kagu and for video.

PS: The search feature is wonderful.