I was advised that perhaps the Sagemcom hub/router/modem that comes with my Bell Fibe package is not compatible with the Airplay. I have had to add a second router and it now works fine. Followed the instructions below. Maybe this will work for you. I do not have Airport Express, however.
Router solution Mar 19, 2013
if you have just fibe internet you can just hit the reset button at the bottom of the sagemcom for 10 seconds. then release and wait for the second and third lights on the sagemcom to turn solid blue. this puts your sagemcom into bridge mode.
then you can connect your router to port 1 of the sagemcom. your router should have it's wan set to pppoe with your bell b1 username and password already programmed in. then disable wireless on the sagemcom by pressing the wireless button on the front for 10 seconds until the wireless lights turns off.
if you have fibe internet + fibe tv you can't have a second router as your TV set box's NEED dhcp from the sagemcom in order to get IPTV over the /26 vlan.
you have 2 options then in both scenario's your sagemcom still initiates the pppoe connection for internet. so just setup your sagemcom as normal for now.
then choose 1 of the following 2 setups.
1. disable wan on your second router. disable dhcp as well. set router lan ip to 192.168.2.xxx and same subnet as the sagemcom.
set wireless to AP/access point. then connect your ethernet cable into LAN port 1 of your router into your samgemcom LAN port 1.
2. set wan on your router to DHCP. turn DHCP on as well. leave router land ip to whatever you want.
in wireless you will have the option to bridge or unbridge. turn on bridge.
connect your ethernet cable to your router's WAN port to your sagemcom LAN port 1.
in your sagemcom add a static dhcp / ip reservation entry for your newly connected router.
(you can get the ip address and mac of your router by going into your router gui under status-->wan)
then in the sagemcom enable DMZ and add your router's ip and hit save.
both ways work. however i recommend setup 1 unless you know how to setup port forwarding yourself.
