The report on the MusicBrainz tagger is that it works, but the amount of information re-written to the meta tags is minor. I was hoping for more individual information like year, genre, and track numbers, and I got just the track numbers. Maybe as more and better information is written to the site, the quality of the tags will improve.
Another very good link I found this afternoon is Constantin Von Wentzel’s Base Station page, for all things AirPort, including some crafty solutions to heating problems (avoid frying that pair of capacitors) and uploading your firmware without hosing the unit. Also included are some handy links to repair outfits who will fix your ailing ABS.