Why doesn’t my Soundwall show up in Airplay on my Mac?

If your Soundwall is not showing up in Airplay on your Mac, the most common reason is that the settings need to be refreshed. The simplest way to do this, is to go to your Network Settings on top menu bar, and turn off WiFi off wait about 5 seconds - then turn it back on.

Then simply go back to your System Preferences >> Sound and your Soundwall should show up!