Hey, I am hoping someone might know how to do this 
 
I have a Denon AVR-688 which only accepts video with HDMI.  I sent Denon an email about a possible FW upgrade that would allow audio as well, but they said that it was a hardware limitation. 
 
So I am wondering if anyone would know how to fix this "hardware limitation" so I could get audio as well.  I am kinda handy and not too worried about the receiver/warranty (if there is any left).  Or am I just going to have to suck it up and get another receiver 

  Although getting new gear is always good 
