The JCreateMovieDialog has an action listener for the timeStepField to update the length of time data, however, this only works if the user hits enter after changing it and I think most people just click on to the next field or tab to the next field. Thus the time never gets updated. So I added a focuslost listener to the timeStepField with the exact same functionality and it makes it a lot nicer to use.

Also a heads up (in case you haven't played with it). A while ago I attempted to update the NASA worldwind jar to 0.6.207.12463, it had a few compilation errors that I fixed, but then the 3D display was messed up (can't remember what was wrong and didn't really look into, so I reverted). Starting at least with 0.6.248.12660, it looks like there is quite a number of changes that are going to need to be made to get it to compile.