I have no sound on HDMI raw. The cable is put on my Onkyo receiver. When HDMI audio is set to LPCM 2 channel work but naturally only 2 channels. The music player plays all the music I have. The problem is with PW & movie player, simce last update 6.3.0. I tried flashing from previous 6.0.22 but neither one give me the Raw passthrough capability. I tried changing different HDMI cables - same result. edit I don't know why! I have not make any changes, only left music player to scan for about half hour. Now Raw passthrough is OK!!! Wonder!
