Terry recently switched from Dish to DirecTV. But when he uses his wireless headphones, they won't work when he streams Netflix from the TV. He's got them connected to his TV audio out jack and a splitter/converter. The soundbar works via optical, and Leo thinks that the optical is now cutting off the TV output jack. Leo says that you need a splitter that will split optical (which is light). Terry's splitter is likely failing.
The chatroom thinks that what has happened is that the TV is sending a Dolby encoded signal to his headphones, rather than PCM. Terry may need a Dolby converter or change the settings to PCM when he uses the headphones.