This is pretty awesome, but I can't help myself see it rather cynically in that I don't expect it to expand to books or movies any time soon. Especially not books.<p>Ripping a CD is so trivial and such an old practice at this point, and so many MP3s can fit on a portable device, that buying a CD already de facto gave you the MP3s for free (except for the bit where you'd have to pay to get more Cloud Player storage if you want to use Amazon to host them in the cloud for you). So it's a cool freebie that isn't really costing much.<p>But I can't rip my own books, and the Kindle cloud hosting and syncing to the last position read across devices and everything is so damn useful that there are a lot of books I own physical copies of that I probably will end up buying again digitally. So, for me at least, doing this for books actually would cost the publishers and Amazon lost revenue, unlike for MP3s. I just don't see them deciding that that revenue is less valuable than the customer goodwill it would create.<p>Bundling a Kindle version and a hardcover version at a discounted price would be a nice halfway step, though personally, I'm increasingly moving towards a "buy on Kindle, find hardcover (sometimes used) if I <i>really</i> like it" strategy.