I think u have to format the files first, for all 13 formats format could take about 4 hours by using nero express 6, and then u use dvd shrink to compress it. You can dl dvd shrink somewhere online for free.....i forgot the website, but i think is www.dvdshrink.com. Like i say, i've never try it before let me know if is work, that's if u willing to gives it a shot.