Track model

lib/models/music_brainz_release.rb

@@ -5,8 +5,8 @@ class MusicBrainzRelease
   def tracks
     if @tracks.nil? and not self.id.nil?
       @tracks = []
-      Nokogiri::XML(open('http://musicbrainz.org/ws/2/release/' + self.id + '?inc=recordings')).css('release').each do |r|
-        @tracks << MusicBrainzRelease.parse_xml(r)
+      Nokogiri::XML(open('http://musicbrainz.org/ws/2/release/' + self.id + '?inc=recordings')).css('medium-list > medium > track-list > track').each do |r|
+        @tracks << MusicBrainzTrack.parse_xml(r)
       end
     end
     @tracks

lib/models/music_brainz_track.rb

@@ -1,3 +1,17 @@
 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