Streaming to Ayre QX-5 Twenty

Just installed an Ayre QX-5 Twenty digital hub, and have in mind a special usage.  Instead of streaming from Roon to it, I'd like to establish a network session so that I could send music from whatever I might be hearing on my Macbook to it.   Both devices are on the network, of course, and I'd like to treat the QX-5 in the same fashion as you would if you had a network printer, and sent a document to be printed to it.

Any ideas?
Thanks