I have a Samsung UN55H6300 TV and a Sony STR-DN840 AV receiver. I'm trying to connect a pair of Sennheiser RS175 RF headphones. Since I'm using the Sony receiver for my sound, the Samsung TV is set to "receiver", which means no audio is available at the TV ports on either the optical or Audio Out connections. With those options not available, how do I connect the headphones to the receiver? Thanks.