Multi-channel audio? How ? (Dolby Digital, PCM etc.)

So,
Take 2 now support 5.1 channels audio out, at least for some HD rentals.
I am wondering if anyone has gotten that to work.
I have Apple TV connected via HDMI to my receiver (which can decode both the bitstream as well as linear PCM for multi-channel tracks).
However, I don't seem to get any multichannel, and the Dolby Digital toggle in Apple tunes makes no difference.
Has anyone gotten 5.1 to work, and if so, which which movie/tv show/trailer?
Thanks,
Dan

1. Not a great fan of detaching audio except in multicam clips. Generally I'd suggest using the expand audio components function to access the channels.
2. Yes. Switch off the auto tracks in the browser and only turn them back on for the clips you need in the project. With expanded audio components, if you turn the channels back on they will reappear in the timeline.
3. You use roles for this. I know time is tight for news, but taking a few moments to assign roles to the clips in the borwser, which you can do in globally, will allow you to export with separate tracks.

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