Mp3tag is a powerful and yet easy-to-use tool to edit Tags of MP3-, Ogg Vorbis, Musepack, Monkey's Audio, FLAC and WavPack files. It can rename files based on the tag information, replace characters or words from tags and filenames, import/export tag information, create playlists and more. The program supports online freedb database lookups for selected files, allowing you to automatically gather proper tag information for your files.
