If you want to easily tag multiple MP3, Ogg/Vorbis, FLAC, MPC, MP4/AAC, MP2, Speex, TrueAudio, WavPack, WMA, WAV and AIFF files (e.g. full albums) without typing the same information again and again and have control over both ID3v1 and ID3v2 tags, then Kid3 is the program you are looking for.
Edit ID3v1.1 tags
Edit all ID3v2.3 and ID3v2.4 frames
Convert between ID3v1.1, ID3v2.3 and ID3v2.4 tags
Edit tags in MP3, Ogg/Vorbis, FLAC, MPC, MP4/AAC, MP2, Speex, TrueAudio, WavPack, WMA, WAV and AIFF files
Edit tags of multiple files, e.g. the artist, album, year and genre of all files of an album typically have the same values and can be set together.
Generate tags from filenames
Generate tags from the contents of tag fields
Generate filenames from tags
Rename and create directories from tags
Generate playlist files
Automatically convert upper and lower case and replace strings
Import from gnudb.org, TrackType.org, MusicBrainz, Discogs, Amazon and other sources of album data
Export tags as CSV, HTML, playlists, Kover XML and in other formats... More Info »