Yes, everything is possible with LightConverse:
1. FireWire connectionConnect your mediaserver PC to the LightConverse PC by FireWire cable and it will be one of Video1..3 input signals in LC.
2. Video capture boardConnect your mediaserver video output to the LightConverse PC with any video input board.
3. SoftwareRun LC and Arkaos in one PC (LC may work on any Display that you wish).
Use one of the DirectShow Screen Capture Driver, for example this:
VH Screen Capture DriverTarget it to mediaserver output window and you will have it in LC on one of the Video1..3 stream.
ADD: There is a better method now, look at Win:\ functionality.
Have a nice day!