intensity pro does have composite input via RCA connector. It goes into the green RCA connection on the input of the breakout adapter. You can also send it S-video with an adapter that it comes with. my opinion, intensity pro is overkill. All you need is a USB capture dongle. Unless you want to do h...
I've done 6 outs from my PC i built about 1.5 years ago with R4, it's very possible to do what you want, but it's not beginner stuff.. you've got to know your system, and your applications to. the resolume team was using a ATI HD5870 eyefinity 6 a while ago, and the program works well with this vide...