@glory I use the Bricasti M12 and run Roon. Used to have Roon on a MacBook Pro and it worked fine wirelessly. (Obviously hooked the M12 up via an Ethernet connection). But a short while back got the Roon Nucleus and it was a HUGE improvement in SQ. So to answer your question yes you can run your PC wireless as a server if the M3 is hooked up via an Ethernet connection.
(Disclosure: Bricasti dealer)
(Disclosure: Bricasti dealer)