Sonos is on my desktop and plays through 3 speakers dotted around the house. iTunes is also on the desktop but we had to copy the music to a Buffalo stack when Apple fell out with Sonos. I normally control Sonos from my iPad but the main dashboard is on the desktop. Up until last week this system worked very well but last week Sonos won’t connect to my music saying that access to PC/music denied. The Sonos radio still works fine! Can anybody help??