So how does it protect...
...against players and play software able to jump directly to a particular title set? From what I understand, since standard DVD player hardware can use this system, it implies that the "premium" content is not encrypted on the fly beyond the DVD-standard CSS system. Which means it wouldn't be difficult to extract the premium content with tools already available to the adventurous. I have to ask if these people took the ease of DVD piracy into consideration.