Hey! I do have a theatre play with live acting. There are few video backgrounds, one projector at the time, only. The actor timing might be different from performance to performance, therefore I have to have control to fade out and start to play next previously prepared video file. There will be assistant, who will do playback timing. Should not be too complicate. I have heard that exist different computer software for playing back video to projector/s. 2 questions: *should theatre buy MAC or PC? * what software to go for? Thanx!