I have an LG HDTV43LF5400 with no Audio output. It is connected to a digital Antenna and a Sony Blu Ray. I tried connecting a Sennheiser RS 120 headphones to this set-up. I can only connect to the Blu Ray (it only has HDMI and Coax connection). This only puts the sound while watching from the blu ray. When we switch the TV input to the Antenna, the sound does not work on the headphones. Any suggestions to have wireless headphones that can both play sound with either the blu ray or the Antenna?