This rant seems quite weird considering that Apple also released Airport Utility 5.6 today with all the same features you had before. And you can actually install and use both concurrently. So you have the... you know... option to use whichever UI you want.
Perhaps you can help me with the following then:
I use a Time Capsule and a first generation Airport Express. The latter is joined to my Time Capsule network and connected to my stereo.
With this setup, I used my iMac for wi-fi internet browsing and AirPlay at the same time without any problems whatsoever. Until yesterday:
After installing Airport Utility 6.0 Airplay will not work with the ole Express.
Checking with the utility 6.0 it states it 'does not support this (Express) base station, and suggests using the Utility 5.6.
Installed Utility 5.6 and all looks like it used to, reports all is fine. Except Airplay won't connect.
Utility 6.0 can no longer be uninstalled, not even with 5.6 installed alongside.
It seems 6.0 has somehow disconnected my old Express from Airplay because of age(?)
Must I now buy a new generation Airport Express if I want to use Airplay from my iMac, or what is the trick?
Strangely, Airplay in both my (fully up-to-date) iPhone and iPad works flawlessly with the existing setup and the old Airport Express.
Any suggestions much appreciated, thanks.
Update: although tried before, a reset of the Express and a restart of iMac somehow fixed the problem.