I purchased two small projectors, inherited 1, and alresdy had another small 1. Each one will project onto a different window. I am trying to determine the best way to link all the videos so that each does not play the same thing at the same time. I thought maybe google chromes might work, but I am not sure how to set up my computer to project 4 different video feeds to 4 different chrome casts. If you can think of a different idea, it would be greatly appreciated. I do not have 4 dvd players and do not want to buy multiple DVDs to play the video projections.