If you are having a huge MP3 files collection then mp3Tag will take care of editing and tagging your collection.
    Organizing, labeling, tagging and categorizing your MP3 collection can be a pain in the neck. This powerful but easy to use tool will automatically organize music collections according to labels album, performer, genre, lyrics, and year of release so on and sets them with tags. It can tag process files like; MP3, WMA, OGG, APE, AAC, WAV, FLAC, WavPack WV, Musepack MPC/MPP/MP+ and Apple iPod MP4/M4a files. The many more capabilities of this tool are; automated search for lyrics and pictures, automatic tag filling, track length comparison for album search for importing, allows to view and edit tag information, save lyrics and pictures inside MP3/WMA/M4a files, drag-n-drop support, translations in all major European languages and much more.
    With unmatched capabilities and number of easy applications mp3Tag is one of the best music collection organizer.