I am using Ulead Movie Factory 3 and like the product. It works well for the most part, but it has problems when I put more than a few movies on one DVD. When I choose some of the movies, they play fine, but when I choose others, it does not play. You click on the choice and it dims for about 10 or 15 seconds and the just returns to the main menu. I have tried different DVDs in different formats (-R, +R, RW) and different manufactures (Sony, Phillips, TDK). It is frustrating. Again, the problem seems to occur as I put more movies on one DVD (i.e., using up more than half the space), but when using less movies, it seems to work fine.