fix multicast issue on home network.
I have 2 x mac laptops... cisco 1142 AP, Cisco 1941 router. WIndows 7 virtual machine on my Mac can play music via Airplay to Apple Airport Express.
However, the mac that hosts the windows 7 virtual machine can not play to Airport Express via airplay.
My iphone can play via airplay.
My wifes Macbook pro can NOT play via airplay.
Needs some investigation
charlesjudd = skype name