So I'm having some trouble with airplay on my iPad. The iPad will only show two of the devices on my network, one apple tv and an airport express. I've got another apple tv and two more airport expresses that I would like to use but they aren't there. I've tried rebooting each device and still nothing. Is there some security setting un iTunes that I might be missing? Any other ideas? Ps. I can connect to all my devices on my iPhone, just not the iPad.