The HDMI on the radio is an "OUT" only unfortunately.
It goes right to the TV's HDMI "IN"
There is an optical audio input (as well as several stereo line level inputs) in the rear of the unit. You can output the optical out of the sat receiver or TV (if equipped) or the L/R outputs to the radio for surround sound.
I use a three port HDMI switch to automatically select between my laptop computer and the Concertone HDMI output.
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