AIR installation on mac - what am I doing wrong?

[Jean-Marie]

What's the wifi signal level showing on the Air settings screen?  Generally if it's below -55dBm the performance can be poor, although the
problem I saw in that situation was intermittent drop-outs/buffering rather than silence, so I suspect that this is not your issue.   The solution in my case was to use an airport express as a wireless extender and park it next to the devialet.

Also, one thing that is not clear from your description is whether or not the computer that is running Air is also connected directly to the devialet via toslink.  If it is, you may want to try disconnecting the toslink cable.  I have a mac mini hooked up to my devialet (via USB) and can stream to it via Air from a different mac.  I've never tried to connect via Air from a PC that is also directly connected by some other route.    

FWIW, I've tried Air, toslink and USB and have found direct connection by USB to provide better sound than connection by toslink and a more reliable connection (obviously) than Air does.  

Finally, the config question I was asking was whether or not you'd linked the devialet to your network via the devialet software configurator.  It sounds like you must have done that or it would not be visible to Air, but I ask it again just in case.

You should also check in System Preferences>Sound that the Selected output is Devialet Air once the Devialet icon turns to black in the menu bar