Do you need a software tool for the administration of ID3 tags?

Mp3tag can rename files based on the tag information, replace characters or words from tags and filenames, import/export tag information, create playlists, and more (freeware).

It supports online freedb database lookups for selected files, allowing you to automatically gather proper tag information for select files or even CDs.

http://fileforum.betanews.com/detail/Mp3tag/1056224000/1

MediaInfo supplies technical and tag information about a video or audio file (freeware).

http://mediainfo.sourceforge.net/en