Taginator
Taginator is a program that allows you to batch write MP3 Tags for multiple MP3 files at once. Assuming that all your files are named in a standard format, you give Taginator a format template and it extracts the needed information from the file name. For example, if all your files have the name format “Artist - Title.mp3″ then you can give Taginator the file name template “%Artist% - %Title%”. It will then extract the correct information and write the MP3 tag for the file.