Yes, same here. HDMI'ed (is that a word?) to my 46" Sony with Denon amplifier. Sounds stays on the PB when playing AB, yet every other app (games included that I have) work just fine through the Denon. Hehehe, wanted to hear some of the cave themes on the stereo.
For right now, I have my Parrot (avatar) doing the background vocals while I play