Can show the songs with 24/192 via network, but jut jut day from time to time during playback.
So I think it should be considered as can't play if you are serious. Not sure if future firmware can fix this issue though.
You may play 24/192 files via a PC with drivers or use another player (e.g. Cambridge Audio 751BD or Oppo) that can feed 24/192 output via toslink or coaxial to the Stream Magic 6 to play.