TuneUp Media has announced that its popular iTunes plug-in TuneUp is now available for Mac OS X. Previously available for Windows, TuneUp helps users by automatically fixing mislabeled song information and finding missing cover art without having to leave the iTunes interface. TuneUp takes an “audio fingerprint” of mislabeled tracks, and then uses Gracenote’s Global Media Database of more than 90 million songs to fill in missing or mislabeled information, all from within a sidebar designed to compliment iTunes. Following the cleaning of the user’s library, TuneUp provides contextual content such as upcoming local concerts for artists in the user’s collection, and YouTube videos, Google news and Wikipedia biographies related to the currently playing track. The unlimited version of TuneUp, TuneUp Gold, is available for Mac OS X and Windows and sells for a one-time fee of $20 or an annual subscription of $12; a limited free version is also available.