private function load_tracks() {
		
		$stmt = $this->dbh->query("call movie_load_tracks(".$this->movie_id.")");
		
		do
			$this->tracks = $stmt->fetchAll(PDO::FETCH_CLASS, "track", array("video_file_id" => null, "load_video_files" => true)); /** @todo - build video files **/

		while ($stmt->nextRowset());
	}