That is really cool!
I want to build a camera tracker so I can do this a little betterhttp://www.youtube.com/embed/mauXAFz4yKk
I run Predict in server mode on my Linux box, it outputs the tracking data on port 1280.
With either a ethernet or WiFi shield I'll "listen" and control a pan and tilt mount for my video camera.
One thing, when running Predict, make sure you remember it is running!
The number of times I've nearly jumped out of my skin when the voice out of nowhere says,
"This is Predict, satellite is at n degrees and approaching"
I swear I have a few more white/gray hairs coz of it!