Tag EditorThis may be pretty useful for those wanting to edit tags of various music file types like mp3, flac, ogg, wma, m4a on the Windows phone itself. Till now, you need to do it on your PC and then sync it back to Phone. It works as promised and as can be seen in above screenshots you can really make your Tags look the way you want.

Description:

Allows you to edit the basic tags of mp3, flac, ogg, wma, m4a files.
You can edit the following tags: album art, track title, artist, album title, album artists, genre, year, number.

Tag editor link