I agree with that. Airplay, bonjour, etc. do not like subnets. If you have a separate Wi-Fi router like the linksys above, set it to bridge mode. That, or make sure that *everything* is going through the linksys and nothing but the linksys is connected directly to your cable modem; i.e., turn off the cable router’s Wi-Fi and don’t plug anything directly into it except the linksys.