Itunes server library mounts but doesn´t play on itunes 12.1.50.
It used to work before updating itunes and also still works on some other machine running itunes 11 and Itunes for windows.
The server app is the Qi-Airtunes which comes standard with Qnap Nas system.
worked flawlessly for more than 2 years.
Thanks for support
MacBook Pro, OS X Yosemite (10.10.2)