Does the USB Audio support in #243 mean that one could sample from a USB microphone? I tried connecting a RODE NT mini, and a USB does icon appears in recording menu, but no sound comes through. Should it work? Or have I misunderstood? 
OP1 is not an AUDIO host
u need a middleman device that is able to be the HOST
in order to tell the devices how to communicate.
something like a computer, phone, tablet, raspberry pi to name a few
Ah ok! 