What is difference if any between running sound (along with video) thru an HDMI cable vs running sound thru a fiber optic cable. The reason why I ask. Well I just recently bought a Samsung dlp tv (3 hdmi inputs and 1 fiber optic out). I have both the cable dvr box and an upscaling dvd player connected to the tv via hdmi. but I have the sound from both devices connected directly to an Onkyo receiver via fiber optic cables. Am I missing anything sound wise? So I guess what I'm asking is "Is the sound from an hdmi cable setup better than a fiber optic setup?"