Gang,As you know our HiRez Circle has attracted some of the best industry veterans who are interested in all things HiRez. Bruce Brown, Pugent Sound, is an SACD/DSD guru and responsible for all the great SACD to PCM transfers at HDtracks, for example. I met Bruce at CES and have kept in touch ever since.
Found this very nice and comprehensive white paper on understanding DVD_Audio. it explains in fairly layman terms, and differentiates DVD-Audio with DVD-Video. It talks about universal players, SMART coding, bitrates, etc. http://sacdlab.cn/Demo/Sonic_Understanding_dvd-audio_format.pdf