When you set a movie as a shader, it should automatically put keyframes in your timeline... one to represent the beginning of the movie and one for the end of the movie. Go into your timeline, find your shader and select those two keyframes. Then, still in your timeline, to the left of a checkbox labeled "Snap" there is a pulldown menu. (see attached pic) One of the choices in that menu is "Repeat." A dialog box will appear when you select "Repeat" and ask you how many times you want to repeat it. Once you do that it will automatically set keyframes along the timeline to make the movie loop. Chucker