MP3 Diags finds problems in MP3 files and helps the user fix many of them. It
looks at both the audio part (VBR info, quality, normalization) and the tags
containing track information (ID3). It has a tag editor, which can download
album information (including cover art) from MusicBrainz and Discogs, as well
as paste data from the clipboard. Track information can also be extracted from
a file's name. Another component is the file renamer, which can rename files
based on the fields in their ID3V2 tag (artist, track number, album, genre,
etc.).