You may not be able to buy the Beatles' music as a group from iTunes, but you can buy most of the member's solo stuff. Lennon, McCartney, and now Starr. That's right, Mr. Conductor's music is available on iTunes including Photograph: The Digital Greatest Hits (which is an iTunes Plus album).
One more thing to note about Ringo, other than he has the best name our of anyone in the Beatles, is that he is a Mac user. I was poking around his personal website, and stumbled across his photography section. Those certainly look like Photo Booth pictures to me.
Thanks to everyone who sent this in.