Well I just picked up the HD-A1 and have spent hours pulling my hair out. I did the firmware upgrade but for some reason I can not get 5.1 audio out. I have tried everything. The built in sound test thinks my right front speaker is my center and my surround sound speakers are my front. I even tried my calibration CD and it just does not recognise my rear speakers. The calibration CD does sort the front speakers correctly. I tried my optical cable and also no go. FYI, I do have a receiver that handles the HDMI signals, 2 in and 1 out. Also, there is nothing wrong with my receiver, sound is awesome with up-conversion DVD player. What am I missing?