Last week I added an example file to the GPX library that Simeon and I created for Flex/Flash/AIR applications. If you haven’t seen it and are interested in checking it out you can grab the code from the project page on GitHub.
The example provided is a very, very basic one that just takes a GPX file and plots the waypoints on Google Maps. It’s an AIR application so to use it you just drag and drop the GPX file onto the app. The code is here.
I haven’t been able to do anything cool with it yet, but I have some things in mind once I get a bit of downtime. If you’re using it, I’d love to hear about it.