Song Sergeant!

Audio Dedupe is an innovative tool that can recognize duplicate audio files even if they are stored in different file formats and are not marked with ID3 tags.

Dupe Eliminator for iTunes is an intuitive tool to Clean iTunes from unwanted duplicates and missing tracks. Easy to use yet full-featured Windows Maintenance and Cleaning solution to clean iTunes. Reclaim space for your iTunes Music Library!

Leawo Tunes Cleaner is a powerful iTunes cleanup tool, which can help you to delete duplicates in iTunes and get album artwork for iTunes music files.With it, you can clean up iTunes music library fast and comprehensively.

Audio Comparer is a Windows desktop application for MP3, MP2, MP1, WMA, AIF, WAV, WavPack, FLAC, APE, AAC, and OGG audio files comparison. The programs main goal is to find duplicate audio files and sort them in whatever way you want.

Tune Sweeper 4 is an easy to use utility which lets you quickly and easily clean up your iTunes Library. Tune Sweeper can scan your iTunes library for duplicate tracks based on your preferred search criteria. It displays your iTunes duplicates in groups so that you can easily select which of the tracks you want to remove from your iTunes at the click of a button. To help users tidy up their iTunes library further, Tune Sweeper also contains the ability to find and delete missing tracks in iTunes, as well as being able to locate any tracks on your hard drive which are not currently in iTunes and add them to your library if required. Tune Sweeper 4 can also find and download any incorrect track data for your songs, fixing any tracks labelled “track 01”, “track 02” etc. Furthermore, Tune Sweeper can download any missing album artwork for you to complete your music collection, as well as allowing users to view a quick overview of their iTunes statistics. Tune Sweeper is compatible all versions of iTunes. Tune Sweeper is available as a free trial download for Windows. The full version of the software costs $24.99, giving access to all functionality, free customer support and a lifetime of free point software updates. »

iTunes Duplicate Song Manager with Folder Watch removes iTunes duplicates in Windows and Mac OS X. iTunesDSM can also watch a folder and automatically add new files to iTunes safely.