In latest fw 220.127.116.1143, may users including me experiencing Failed to initialize audio device warning pop up on HDMI out. I've experienced it on .flv file with mp3 audio & some other users experienced it on different format video/audio files as well. Its not directly related to http://jira.boxee.tv/browse/BOXEE-12522 as in that issue user forgets to turn on AVR and the warning pops up, but in my case everything is on and I still get the warning. Then I've to reboot BB to get audio back :( I'll post the file info shortly. Have a look at this thread http://forums.boxee.tv/showthread.php?t=53366&page=2 to know what other users are experiencing.