Have you tried pressing the home button on your remote, move left to the settings cog and then up to sound output. You can cycle through the different sound outputs. I have all divices plugged in AVR and one HDMI to my one connect box. I tried this and it works the only issue I had was when I went from TV audio back to HDMI audio I had to re select cbl/sat on my receiver for the audio to play through my speakers. I'd imagine doing that would be less annoying than the HDR not auto switching. I think you've got a project for the weekend pencilled in!!
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