About three years ago I saw a demonstration on television in which a DVD movie was playing over top of a word processor. The movie itself was translucent, and could be adjusted accordingly. How cool is that, I thought. Well, I now own a MacBook, and one of the first things I've tried to do is recreate that translucent effect I saw three years ago. Alas, I cannot figure out how to enable translucency for my DVD player?