After burning a full day getting HDMI audio working on my GA-E7AUM-DS2H running Mythbuntu, I just wanted to report which tips solved the problem (if you do a google search on this topic you'll see numerous links some with legit information and some not so much).


Disable onboard audio in BIOS. I'm not 100% sure this is required, but it doesn't hurt.
Recompile the latest alsa (0.120)
Configure your .asoundrc. Details can be found in this post (http://forum.boxee.tv/showpost.php?p=49052&postcount=6).
Configure boxee and whatever other apps you're using.


Hopefully, this will help those trying to setup their Linux HTPC in the future so that the process is only a few minutes and not multiple days/weeks.

BTW, while audio is working from all my applications, paplayer inside boxee and xbmc won't play certain .mp3 files (the debug logs don't even really seem that paplayer is trying to play the files). Audio is working for all other data formats I tested though. vlc, mplayer and a host of other players play this content through HDMI without incident and boxee for windows has no problem with the content.

Any ideas of how to fix this problem with certain mp3 files and paplayer?