For those of you out there who A) use Canola and B) haven't figured out how to make it use mplayer so A2DP works, here's a very short set of instructions. First, the caveats:
If you mess up the "config" file Canola will not be happy. You may want to copy it to another location before making edits. Lastly, Canola with mplayer or at least Canola with A2DP + mplayer does not always work well. I've had problems where seeking around in a song will cause it to freeze mplayer and rapidly sequence through my playlist (Not playing anything). The only way to fix this is to exit Canola, kill the leftover /usr/bin/mplayer processes (there are usually two) or reboot your tablet, then start Canola again. If anybody has a great idea on how to fix this problem it would be nice.

1) Go to /home/user/.atabake (you'll need to do this from a SSH session or the X terminal since File Manager won't show hidden directories (names prefixed with a dot/period)
2) Edit the file called "config" (without the quotes)
2a) How you do this is up to you. I use vi.
3) On line 8 it should say "audio = (something other than mplayer)"
4) Change it to read "audio = mplayer"
5) Save and quit, you're done.
6) If you're in Canola you need to quit and go back in for the change to take effect



Larry