Pick up a used node 2i. You can pick them up for 200 to $250.
A Node 3 can be found for ~$100 more.
You can airplay to them and connect to your DAC via coax.
While your at it, you can stream Internet radio for free and get trial versions of Tidal or Qobuz so you can hear and enjoy streaming. The nodes are controlled by your MAC (or your phone), but they do all the streaming, eliminating the need to send music from the Mac and freeing up your Mac.