I have just connected my HD MySky box to my AV Receiver via the SPDIF using an optical audio cable but I get no sound. The Decoder audio settings are set to SPDIF Dolby.
My AV receiver (Denon AVC-3800) has inputs for AC-3RF, Coaxial, and Optical.
It might be that my receiver is limiting my ability to hear the sound but I would have assumed by connecting the optical cable that would be all I need to do.....maybe I have the receiver on the wrong mode, no optical mode I can see, only AC-3RF (laser disc).
Any help/ideas appreciated.