eMusic Tag Editor is really cool! This application provides editing of ID3 and WMA tag info in bulk.
I was looking for a tag editor for editing tag info for WMA files (since Media encoding did not copy over the ID3 info when I converted from my MP3). eMusic Tag Editor enabled me to add tag info to over 2000 songs in the space of an afternoon.
My favorite feature is the ability to extract tag component information from a file path. For example - I store my files in a directory named after the artist and the filename is the title of the song. eMusic Tag Editor pulled this information for each file and updated the tag info for every song in my collection while I went to lunch.
Download a trial version at http://www.emusictageditor.com/
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