I currently use Vixen
http://vixenlights.com for controlling holiday lights timed with music. I recently built a laser projector and would like to add the laser to my light show. The boxes that control the lights are not DMX but vixen works with them. Vixen has many plugins for outputs serial parallel and otherwise including DMX, and can launch exe files on cues as well. Vixen is not open source (it is free) but they give you the info you need to write your own plugin's also.
I am wondering if it is possible to have vixen send commands to LFI player to initate ild files perhaps through live show. I think live show can somehow be controlled by midi although I am not sure how. Basically I would need some sort of input serial or otherwise (Midi might work) that would basically use Vixen to press buttons in live show. I see LFI player has a section in prefrences called COM Settings, although I am not sure what this is for input or output and what kind.
Ideally it would be nice to use once pc running both Vixen and LFI player but I would be ok with two computers linked by serial or midi or dmx or something else.
Mostly I am looking for information about LFI player if you can send some sort of commands to control live show and if so how and what sort of commands do I need to send and where. If not perhaps an exe file that will basically play an ild file when it is launched. Once I know how to controll LFI player from a trigger I can figure out how to make vixen do it.