Tagger

— Support for many music file types (mp3, ogg, flac, wma, wav, and more)

— Edit tags and album art of multiple files, even across subfolders, all at once

— Edit unsynchronized and synchronized lyrics for a file (with LRC import and export support)

— Convert filenames to tags and tags to filenames with ease

— Lookup file information using MusicBrainz

— Lookup lyric information using Music163 and Letras

— Open, manage, and create playlists in many formats (m3u, pls, xspf, and more)