In a brazen u-turn, Apple's iTunes Store has changed its mind over upgrades to the DRM-free iTunes Plus format and will now let customers choose the songs and albums they want in the higher bit rate.

Q. I appreciate the chance to upgrade my iTunes songs to iTunes Plus, but I would rather not convert them all -- I bought some by mistake, and others are duplicated by compilations I have bought since ...

I'm wondering, is there a way to selectively choose which songs or albums to upgrade? I'm looking at the page presented to me in iTunes right now, and all it has is that big honking button to purchase ...