Some of Warner Music Group’s titles are now available in the Amazon MP3 store, leaving Sony BMG as the lone major-label holdout from the DRM-free digital-music shop. Notably absent from Amazon’s digital shelves: Josh Groban’s Noel, Against Me!’s New Wave, and that last James Blunt record, which really at this point should be available for sale anywhere just so people may stumble into buying it accidentally. [Reuters]