Have you ever wanted to convert files on your computer but haven't had the software to do it?
This site might help. It looks pretty easy to use too:
www.zamzar.com

We would really like to convert the photostory files some of the centres in the project have made so we can show them on the online site - perhaps this will help! - I used this but only managed to get the video with no sound, so using the original file (which only played sound) I combined them both using iMovie - not perfect but useable.