I just bought a Xtreamer Prodigy 4K Media Player, WHen i connected it directly with the TV using HDMI, Sound and Video works perfect. But when i connect HDMI through my Onkyo HT-R393 AV Receiver, only Picture, but no sound. With optical connection i get the sound working on the AVR. What could I be missing in my AVR setup, so that i can get sound through my HDMI. Appreciate your help in this matter.