I have a Hughes DirecTv Tivo unit that supports Dolby Digital connected to my onkyo receiver with the optical cable. Everything works fine except programs broadcast in dolby surround (pay perview movies, Lost) are displayed as PCM input on my receiver. Dolby Digital works fine on my setup from DVD's and I have selected the option in the Hughes receiver to output Dolby when available. Am I missing something here? My first post!