I have a Sony STRDG720 A/V receiver that does not have an optical out port. I was recently gifted a set of Sony Wireless Headphones that connect using a digital optical cable. I realize it is not possible to connect the headphones to my receiver, and I'll have to connect to my components (satellite and Apple TV). In doing this though, I still can't get any sound through the headphones, I'm guessing it's because the signal for these components is routed via HDMI through the receiver. Does anyone know how I can make the headphones work short of buying a receiver with an optical out port?