I like this program. I like iTunes too. But what I don't like is how itunes currently stores files and in particular that it doesn't attach album art to the actual song file but puts it away in an album art folder. This means that if you like to move your music files around onto mass storage devices or any media player/mp3 player other than an ipod it doesn't take the album art.
Jaikoz has allowed me to to tag all my files in the format that I want, using a logical interface similar to that of iTunes in that, once loaded all files can be viewed by album/artist/genre and corrected accordingly.
Corrections can be applied in various ways. A local corrector can be applied to improve grammatical errors and improve file identification/auto correction. A file identification process can then be carried out and finally an auto correction process using the MuzicBrainz database. This is fairly accurate but if you don't like the results you can either use the manual corrector and select from a number of identified files or apply your own correction in the spreadsheet like table.
You then have the option to save files to folders and subfolders, in the format that you want using hotkeys and to top it all your files now work in iTunes AND any other mediaplayer/mp3 player with all your tag information.

I have experienced occasional bugs (error windows for no reason) but otherwise works very well.

This program does exactly what I need a file tagger to do and has the versatility to allow users to edit tags in any way they choose.
If you like cross platform freedom but prefer to use Mac this is my choice and well worth the $20.