I have an Apple TV connected to a HD621 and it is very good actually you even get DD when streaming over AirPlay from phone or iPad so it is worth having.

I'm using my old 568 processor so the config program is different to yours but it really is not that tricky. I would recommend looking at your current config and it should be fairly obvious how to modify it for the extra input. But as already mentioned you have to set up G68 and HD621.

Hope this helps

568.2mm, HD621, 598, M60C, 557 (for mains), 556 (for rears), 504, M2500, 519 RF demodulator.
Monitor Audio RX6 and RXFX Michell Gyro Dec QC power suply and Michell phono stage, Sky HD, Panasonic 55" Smart VIERA Plasma

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