ITunes Offers To "Upgrade" The Already DRM-Free Songs You Bought From Amazon?

ITunes Offers To "Upgrade" The Already DRM-Free Songs You Bought From Amazon?

Update: Mike writes back to say that after reading the comments below, he checked his purchase history and the album is indeed listed there. What’s confusing is Mike didn’t buy it through iTunes, but through Amazon, but he says that other people did have access to his account and may have purchased it without his knowledge.