A possible solution for iPhone/iPad WiFi users:
Yes, you bas and co would have to do a little coding (not much I would hope);
there is an app called gps2ip, I think it's free.
It runs in background and sends iPhone NMEA+ data over TCP/IP.
All OzRunways would need to do is listen on a port. The devices would need to be tethered via usb or wifi, though gps2ip will also push via 3G.
whadyareckon?
sc