exit;
     break;
     // TRACK
 // TRACK
 case "get_track":
     $track = new WT_Track($_POST["track_id"]);
     if (!empty($_POST["track_id"])) {
         $track->retrieve();
     } else {
         $track->defaults();
     }
     echo json_encode($track->db_out(null, 0));
     break;
 case "insert_track":
     $track = new WT_Track();
     $track->insert($_POST);
     $track->db_response("json");
     break;
 case "update_track":
     $track = new WT_Track($_POST["track_id"]);
     $track->update($_POST);
     $track->db_response("json");
     break;
 case "quickupdate_track":
     $track = new WT_Track($_POST["track_id"]);
     $track->quick_update($_POST);
     $track->db_response("json");
     break;
 case "delete_track":
     unset($_POST["action"]);
     $artist = new WT_Track($_POST["track_id"]);
 public function update_tracks($tracks = array(), $album_id, $artist_id)
 {
     global $wpdb;
     $wt_track = new WT_Track();
     $attachments = array();
     foreach ($tracks as $track) {
         $is_track = $wpdb->get_row("SELECT * FROM " . WORDTOUR_TRACKS . " WHERE track_title = '" . mysql_real_escape_string($track) . "' AND track_artist_id={$artist_id}");
         if (count($is_track) > 0) {
             $attachments[] = (object) array("action" => "insert", "attachment_type_id" => $is_track->track_id);
         } else {
             $insert = $wt_track->insert(array("track_title" => $track, "track_artist_id" => $artist_id, "_nonce" => wp_create_nonce(WT_Track::NONCE_INSERT)));
             if ($insert) {
                 $attachments[] = (object) array("action" => "insert", "attachment_type_id" => $wt_track->data["track_id"]);
             }
         }
     }
     $delete = parent::delete_attachments($album_id, "album", "track");
     return parent::update_attachments($attachments, $album_id, "album", "track");
 }