Am I understanding correctly, that you want to play two different videos at the same time, one playing on monitor A, the other playing on monitor B, both originating from the same computer?
You "might" be able to accomplish this with the picture, but I'm not certain about the sound. I don't know how you would separate sound from two movies or videos playing at the same time. I don't even know if using an extender would do it. But I only use one extender. Maybe someone who has done this can answer.
Sent from my Nexus 7