Wireless laptops with iTunes cant play music to Apple Airport Express.
My home network is made up of;
Cisco 1941 router with 8 port EHWIC with POE
Cisco 1142 AP for wireless
Apple Airport Express connected to LAN (wifi turned off) for iTunes Airplay.
All wireless is VLAN 50
All LAN is VLAN 10
Apple Airport Express is VLAN 50
All works fine except iTunes on mac laptops or windows laptops can not play wireless music to Apple Airport Extreme (wireless N, VLAN 50)
Interestingly, iPhone (wireless G, VLAN 50) can play wirelessly to the Apple Airport Express.
From google searching and trial and error I suspect Multicast Groups and Bridge Groups need to be setup correctly on the Cisco 1142 AP and Cisco 1941 Router. This is a little bit beyond me.
the reference to "Apple Airport Extreme" is incorrect. all references should be Apple Airport "Express"