Our V's (at least the '04, don't see why it would change) have the regular DVD Video format, which is different than DVD Audio. DVD Video plays crisp video, obviously, but plays CD quality audio.
Now, many DVD Audio discs play on multiple format machines. For example, my Eagles: Hell Freezes Over DVD Audio disc DID NOT play in the V. However, my Diana Krall: When I Look in Your Eyes DVD Audio disc DID.
The Diana Krall disc would play on DVD Audio players, DVD Video players and DVD Audio/Video players.
But the problem is.......when you play a DVD Audio disc that is compatible to a DVD Video player, it will only be in the aforementioned CD quality.
So, if there are DVD Video features, you obviously can watch such features on the screen with the normal restrictions all discs have in the V. And if you like, since the lockout will still let you listen to DVD's audio section, you can play such discs like that as well.
So........if you have a DVD Audio player in the house and you have a number of these DVD Video compatible DVD Audio discs, play away. BUT if you don't, you're wasting money on sound the good ole cheaper CD can give you. Plus you get all the controllability that you wouldn't have on the V DVD player.
So there, hope that helped. I'm glad I got to research that.