Hi All - and thanks to all for all the kind words as well....
The reason we recommend setting to PCM/Auto instead of Bitstream (and the link does work - try instead
http://www.opusproductions.com/disc/setup.html but be aware that there is a typo (will correct it tonight) is because we have seen issues with PS3 devices set to Bitstream not outputting the 24/192 stereo properly. If set to Auto/PCM, then you can use the player (which I certainly do, given my player is a BDP-105 and my amplifier has only legacy digital inputs but 6 analogue ins) to decode. If you have a cheap-ass player and an expensive AV amplifier, then you can bitstream out but this can be problematic.
The disc defaults to DTS-HD MA simply because that is guaranteed to work - period.
You can also select your stream off the main menu when the disc has loaded. Green = LPCM 5.1, Red = DTS-HD MA, Yellow = LPCM Stereo.
When in any playlist, the Blue button jumps you to the next playlist.
Remote Control KeyPad will select tracks, as in CD.
In all, you're correct in thinking a lot of planning went into this one - it will be interesting to read what the preferred approach is - menu driven, like CTTE or PA-BD style, like this one.