And I'm not sure why. I got a blu-ray HTIB due to limited space in my cabinet and I didn't want to buy all new speakers. Limited funding. Got this connected via HDMI. When I connect just the 622 to the HTIB I get the sound. When I connect the HTIB to the projector the video comes on but the sound goes away. Am I experiencing a limitation with the HTIB in that it won't process the HDMI sound if it can't pass it through to the device? In this case the projector has no sound of course. The HTIB is the LG LHB335 and the projector is a Sanyo PLVZ5. Thanks. Edit: I got an answer from product support. I was right. If the hdmi out from the lhb335 is not connected to a device that can receive the audio, the lhb335 will not play audio either. A HUGE limitation of this device!