Friends and colleagues of mine, knowing that I’m keen on these kinds of puzzles, recently peppered me with messages that read along these lines: “Hey, I hear the new Dave Matthews CD can’t be copied! Know of a workaround?” And so, I dutifully purchased yet another copy of Stand Up (I’d already grabbed the album from the iTunes Music Store to check out iTunes’ new video feature) and took a look. For those new to the story, Sony BMG Music is in the early stages of releasing audio discs (they’re not official audio CDs as they don’t conform to the...