hooray for rb-appscript

itunes.rb

require 'appscript'
require 'titleize'

def set_tags_from_filename(track)
  f=track.location.get.path.split('/')[-1]
  m=f.match(/(\d\d) (.+?) - (.+?)\.mp3/);

  track.track_number.set m[1]
  track.artist.set       m[2].titleize
  track.name.set         m[3].titleize
end

Appscript.app('itunes').selection.get.each(|t| set_tags_from_filename(t) }