Connected on WiFi but no sound

[laertes]

Then the problem is most likely on the Mac side. 
Try going to the general system preferences / Sound and switch the output back and forth between the built in speakers and the Devialet. 
If it does not solve the issue, I would then recommend to reinstall air. And if it is not sufficient to uninstall it entirely, unload the kernel extension and then reinstall it. 

Good luck,
Jean-Marie

Thanks. Pretty sure it is something in the Mac, yes.

What is the best method to uninstall Air completely? And how does one unload the kernel extension?

To unload the kernel extension, you need to open the terminal and type there:
sudo kextunload /System/Library/Extensions/DevialetAIRAudioDriver.kext

you can then delete the corresponding file /System/Library/Extensions/DevialetAIRAudioDriver.kext

and then delete the Air application: Devialet Air in the Applications folder.

When it is done, you can then do a fresh install.

Jean-Marie

Thank you Jean-Marie. Unfortunately, I went through the procedure above to remove the App and related files, restarted the Mac, then did a fresh install, and still no sound over Wifi.

I will continue to follow up with Devialet tech support. (So far they have been less than accessible)