Well, its probably only quasi legal to do this, but if you are already obtaining the necessary public performance license to shows films off of video, it might be ok. Do you know about Netflix? If you don't Netflix is a subscription DVD rental service. For 20 bucks a month you can have out 3 DVD's at a time. They mail them to you along with postage paid mailers to return them. Why not order the dvd's of your upcoming titles and play the theatrical trailers off of the dvd's? Netflix has a huge library and at $20 it should be affordable. Like I said earlier, it's probably only quasi-legal, but if you have the necessary public performance license to play and promote the film, I would think that a reasonable argument for this could be made. Of course, I'm not a lawyer, so I'd have to advise you to check with your own counsel.