Hmmm.. I tried the "select the Digidesign Output" thing in the Sound control panel, and iTunes still would not play audio. It wouldn't play period - weird - no counter/running down the track. I'd hit play, and nothing. No change. I've updated everything to 9.2.2, and have only the Mac OS Base + Digi extensions. Odd. It's not really critical, but it would be nice to not have to reboot into my normal environment every time just to hear music!