You could use a MIDI over NET program (for example http://tobybear.de/p_midibag.html - bottom of page) on both computers, then drive Resolume using MIDI commands.
I've had good results with MIDI sent from Ableton Live.
Yep, you can assign MIDI notes to stuff like selecting the active layer slot. Note that Resolume records the active channel number as well, so if your bandmates aren't using the channels you can multiply the number of available notes/controllers by 16. This means that you could potentially dedicate ...
Loaded Resolume 2.3, played around with some filters and the feedback source, exit the program. I get the usual "attempted to read memory at xxx" error, which I've seen before, followed by the Microsoft error dialog "The program Resolume.exe has encountered a serious error bla bla bla...