Hollywood Reporter:
Apple is changing the way iTunes users can replace their existing iTunes songs to the new DRM-free versions. Initially, the only option available was to convert every iTunes-purchased file to the new sans-Fairplay version, for 30 cents a track, using the “Upgrade My Library” feature. On Thursday, Apple switched to a per track and/or per album model whereby users can chose which songs in their library they want to convert to DRM free versions.