Hi peeps, paging the Tech gurus out there! Just chatting to a friend about DVD-A, DVD-Audio and SACD. (DVD-A being the audio bit of normal DVD-Video) She says the only difference between DVD-V audio and DVD-Audio formats is "DVD-Audio has header tags like MP3 ID4 tags rather than title and menu structure" Now to me that sounds like it can't be right, I mean they wouldn't have even bothered making DVD-Audio if that was the only difference, a slight mod in the firmware in all DVD players and it could cope with DVD-Audio discs. So whats the difference? And I've also been trying to find a good technical description of all three formats, without any dumbing down to "I'm with Stupid" level. And have failed Any links? Help appreciated!