The ever-excellent Roughly Drafted goes into great detail here, about how iTunes Extra & LP work.
So that’s my question answered, however Roughly Drafted also goes on to postulate that the real benefactor for this approach is Apple TV, or whatever it’s successor is to be called.
The real kicker though is the fact that all this is done using open standards – no proprietary Flash or Silverlight required.
It would be really nice if certain people, who have lambasted Apple in the past for their horrible, closed proprietary systems, to maybe just admit, just for once, that Apple just might have the user’s interests at heart.
And of course, as RD points out, their own hardware sales. Once Apple’s users have enough iTunes LP & Extra content on their Mac/PC, Apple will release Apple TV 3.0 and all that content now plays on that device, effectively replacing DVD players in one fell swoop.
As always, there’s far more info in Roughly Drafted’s article, it’s highly recommended, but sometimes I wish RD would keep these plans to himself – we don’t want the enemy knowing all our plans do we?