Ignore artist_name and track_titles that aren't strings (fixes playout for empty artist name or track titles)
Ignore artist_name and track_titles that aren't strings (fixes playout
for empty artist name or track titles)

Lapotor/libretime,LibreTime/libretime,comiconomenclaturist/libretime,Lapotor/libretime,comiconomenclaturist/libretime,Lapotor/libretime,Lapotor/libretime,LibreTime/libretime,comiconomenclaturist/libretime,comiconomenclaturist/libretime,comiconomenclaturist/libretime,comiconomenclaturist/libretime,LibreTime/libretime,LibreTime/libretime,comiconomenclaturist/libretime,Lapotor/libretime,LibreTime/libretime,LibreTime/libretime,Lapotor/libretime