Got confused by the track files that the ATP Photofinder produces. The KML files that it can export (on request) to the camera's SD card do not contain date/timestamps, so cannot be used to manually geotag your images using other software (should you want to do that). Instead, you have to connect the device itself via its USB-2 port to your computer - you then get access to Magellen .log format files that contain all the GPS data - which you can then convert to GPX format (or whatever) using utilities like GPS Utility.