It's actually pretty easy. I just make a folder and copy both files into it. Then I setup my movie with mymovies collection utility. I choose online folder & then browse to the folder. Then choose the folder that the movie files are in. When you go to watch the movie mymovies will play the first file & then will play the second file automatically. I hope this is understandable since I am away from my computer & am doing this from memory.