Can Airport stream itunes and extend my wireless network at the same time? I have an Airport in my 3rd floor bedroom that I use to feed iTunes to a receiver. When using my iPad (and iPhone) upstairs they are too slow since my wireless router is on the 1st floor. I have an Ethernet connection in my bedroom and could plug the Airport into it. If I hard wire the Airport can I still stream iTunes to my receiver and have it extend my wireless network at the same time?