Just looked at the specs.
Nice device, looks like it can play just about anything.
It's totally unclear as to how it is used with a PC/Mac.
Since it has an external flash card like the Pono did, I'd suggest using the card in a reader and adding it as a manual handheld device in MC.
That's how I got all of my material onto a Pono. It's WAY faster than going through the USB interface was.