I recently got an 8300HD for my Pioneer 5060HD Plasma HDTV and can not get sound (audio) thru the HDMI connection ... the 5060HD's media box has 2 HDMI inputs (#1 and #3) and I have tried both, but only get video w/o sound from the 8300HD's hdmi output ... I have tried 2 (new) different hdmi cables -- can anyone offer any help/suggestions? ... THANKS!