jit.qt.videoout is for sending a matrix to a video output component, for example a firewire camcorder. To display a matrix on a monitor you need to use a jit.window object in fullscreen mode.
Also a standard DVI splitter will simply duplicate the single input to two outputs, producing two of the same image. If you want to display two different images, you will need two DVI outputs from your computer.
Alternatively, if you only have one DVI output available, you could buy something like the matrox dualhead2go. This little box presents itself to the computer as a single, double-wide display, and then halves the image to send the two halves to two different outputs. In this case you would simply need to display your entire jit.window fullscreen on this DVI output, and it would be split by the hardware.
