Purchased a Roku HD approx 1 week ago. Love it. Trying to get Dolby 5.1 to work for watching movies from Amazon instant video. Roku is connected to TV (a few years old -- Toshiba Regza) via HDMI, but receiver (NAD 753) is older and does not have an HDMI input. It has RCA input and a digital optical (toslink?) input, and is Dolby capable. Connecting Roku to receiver via RCA cables gives stereo, but not Dolby. (It's the center channel for dialogue that I'm after -- getting old and ears are going. )
One possible solution seems to be getting an HDMI splitter, running HDMI from Roku into splitter, then HDMI out to TV and digital audio out to receiver. My non-technical brain thinks this would work, since I'm maintaining a digital signal. Anyone tried this, or know whether an HDMI signal split into digital audio would maintain the data necessary to give me multichannel audio?
FWIW, I asked Roku support, and they said, "Never tried it. Dunno." Trying to gather more data before I plunk down 50 smackers on an HDMI splitter. Thanks for any help.