Hi,
I have my Yamaha RX-V381BL connected to my Sony XBR49X800E. It's passing audio but not 5.1. Connection is through HDMI (HDMI 3 ARC on the TV and HDMI out on receiver). HDMI control is on on receiver and ARC is on. I'm playing a Netflix movie with 5.1 audio.
I can hear audio through the audio...