Hi. Why would Airplay work from my iOS devices but not my Macs, when there's a third party wireless AP in between? If everything goes through my Apple Time Capsule, no problem. If there is a third party access point in between, the Macs can see the airport express but when trying to use its speakers, it just fails to connect. So, I guess I'm also asking, why would a Mac be able to see an Airport express (in iTunes) but not be able to play through it? The AP has no filters, firewalls, or anything. I just can't figure it out. Anyone hear of this before?