Originally Posted by The Kipnis Studios
...certain DVD-A are recognized as DVD-V and won't always play. Sad :-(
Just to (perhaps, hopefully) lend some insight to this: Almost all my DVD-A discs have the VIDEO_TS folder, allowing them to play on a standard DVD player. They must have the AUDIO_TS folder, that is where the DVD-A magic resides.
I'd love to discuss this more elsewhere.