I Bought a Squeezebox Duet, a cool network music system by Logitech.
See www.logitech.com for product details.
Interesting tech stuff:
The SBC runs Linux. You can write your own applets in Lua, and upload them to the SBC
You can ssh into the SBC (Squeeze Box Controller) (enable via settings → advanced → ssh):
ssh root@10.10.200.104
Installed this server software on my Ubuntu laptop by downloading and installing the proposed Debian package. After installing the server can be configured with a browser on http://localhost:9000/
The SB can be configured to use it with Settings → music source → …