He himself was looking for a way to "listen to music not through iTunes."
Found only how to listen to on-line radio:
Paid, but works on ATV, CarPlay.
It will be "a little off topic" ...
There are projects like Volumio (Volumio.org).
With not the biggest expenses we teach a network player with support for on-line radio, AirPlay ...
For the Apple ecosystem, a great addition.
"Lying around idle" raspberries2. I tried to put it - it works fine.
I understand that itвЂ™s not about ATV, but I still havenвЂ™t found an вЂњadequateвЂќ player for ATV. :(