In our most recent AvConnect update, we have made some changes regarding Google Earth flight tracks. From your flight summary and logbook summary pages there is a View Track link to open your Google flight track map. Rather than downloading the map, locating the file, and opening it, the flight track map pulls up in a browser window. If you wish to view the track in 3D, there is a link on the browser page to download the map in Google Earth.
Here is a demonstration: http://www.youtube.com/watch?v=ZvJxgMtR_Og