The particular one that I am downloading now, is avi. I understand (through another thread that I started) that it is possible, using particular software, to convert the file and burn it using a cd and cd burner. At this point, I am just trying to download a full length movie...and view it, making sure that it is decent quality and not something weird unrelated to the movie title. The loss of quality using the cd route is basically irrelevant as they will be used on the children's 7 inch portable DVD players, not our large television where the lesser quality would be noticable.