This plugin for GMPC adds a editor panel for editing song tags.
With the plugin enabled, you are able to queue one or more songs to
the Tag editor from the playlist or song browser.
You may then enter the Tag editor panel and modify the tags of the
queued songs one by one or by groups. The changes are recorded when
you hit the Save button. If you made a mistake while editing tags,
you may discard the changes you made to one song or a group of songs.