+ case ATOM_TITLE: return "title";
+ case ATOM_ARTIST: return "artist";
+ case ATOM_WRITER: return "writer";
+ case ATOM_ALBUM: return "album";
+ case ATOM_DATE: return "date";
+ case ATOM_TOOL: return "tool";
+ case ATOM_COMMENT: return "comment";
+ case ATOM_GENRE1: return "genre";
+ case ATOM_TRACK: return "track";
+ case ATOM_DISC: return "disc";
+ case ATOM_COMPILATION: return "compilation";
+ case ATOM_GENRE2: return "genre";
+ case ATOM_TEMPO: return "tempo";
+ case ATOM_COVER: return "cover";
+ case ATOM_ALBUM_ARTIST: return "album_artist";
+ case ATOM_CONTENTGROUP: return "contentgroup";
+ case ATOM_LYRICS: return "lyrics";
+ case ATOM_DESCRIPTION: return "description";
+ case ATOM_NETWORK: return "network";
+ case ATOM_SHOW: return "show";
+ case ATOM_EPISODENAME: return "episodename";
+ case ATOM_SORTTITLE: return "sorttitle";
+ case ATOM_SORTALBUM: return "sortalbum";
+ case ATOM_SORTARTIST: return "sortartist";
+ case ATOM_SORTALBUMARTIST: return "sortalbumartist";
+ case ATOM_SORTWRITER: return "sortwriter";
+ case ATOM_SORTSHOW: return "sortshow";
+ case ATOM_SEASON: return "season";
+ case ATOM_EPISODE: return "episode";
+ case ATOM_PODCAST: return "podcast";
+ default: return "unknown";