Hi all- I know there have been numerous discussions on this, but I still don't seem to have an answer. I have a new 4660x2 Ultra. I have it hooked via HDMI to a Yamaha RXV473 receiver. I watched both a Netflix movie and a Vudu movie. In both cases, the receiver shows the signal as Dolby Digital Plus. However, the audio is only coming through in stereo and the subwoofer. Is there an issue with the Roku or is there a setting that I need to change? I have a ticket into Roku about this as well, but the tech on the chat was not able to help. Any insight would be great!