Ref sync Philly Webcam with live atc I use Webcam One frequently linked with the sound from Philly tower from this (Daves) site.
I have found both well linked...as an example on Sunday last the tower could be heard giving lufthansa 427 clearance for takeoff and seconds later the Lufthansa 747 could be seen lumbering down the runway behind the United parking area on Webcam one'.
For your interest another good webcam to link up with from the atc audio on this site is Anchorage Alaska.Unfortunatly these cams are down a lot ...but when up are very good with lots of 747 action ,,at the moment Alaska is app 9 hours behind BST...so no daylight on camera until about 5 pm local BST.... hope this info is useful. AKB