public function media_files()
    {
        return $this->with_blog_scope(function () {
            $sql = '
				SELECT M.*
				FROM ' . MediaFile::table_name() . ' M
					JOIN ' . EpisodeAsset::table_name() . ' A ON A.id = M.episode_asset_id
				WHERE M.episode_id = \'' . $this->id . '\'
				ORDER BY A.position ASC
			';
            return MediaFile::find_all_by_sql($sql);
        });
    }