I’ve been using the Qobuz app running thru my Zen MK3 today. A strange thing happened playing my favorite playlist. It will only play the Hi-Res tracks on the playlist. It skips the others. Looks like it identifies my Zen as “up to 24 bit - 192 kHz” so it may be selecting only Hi-Res tracks. Won’t even play playlists, tracks or albums that aren’t Hi-Res. I’m going to contact Qobuz.