AirTunes speaker menu missing from iTunes for Windows

If your firewall is blocking the port that iTunes uses to locate AirPort Express, then guess what--you aren't going to see the speaker menu. Fixing this is as easy as opening the right port on your firewall.
iTunes uses UDP port 5353 to locate AirPort Express base stations that can be destinations for your AirTunes music stream. Make sure this port is allowed through your firewall.

You can learn more about the TCP and UDP ports used by Apple products here.
Published Date: Oct 10, 2016