musicbrainz/lib/models/music_brainz_track.rb

class MusicBrainzTrack
  attr_accessor :position, :recording_id, :title, :length
  
  def self.find mbid
    xml = Nokogiri::XML(open('http://musicbrainz.org/ws/2/recording/' + mbid))
    self.parse_xml(xml) unless xml.nil?
  end
  
  def self.parse_xml xml
    @track = MusicBrainzTrack.new
    @track.position = xml.css('position').text.to_i || nil
    @track.recording_id = xml.css('recording').attr('id').value
    @track.title = xml.css('recording > title').text
    @track.length = xml.css('length').first.text.to_i || 0
    @track
  end
end