Reset button

Hello,
I developed videoart installation and I need to make hardware “reset button”.
Installation runs on Resolume and the easiest way of reseting is reloading saved composition.

I have Arduino UNO with button on digital input.
Pressing this button should do the same process as mouse clicking on the file (saved composition).

I need some script calling this:

“C:\Program Files (x86)\Resolume Arena 5.1.4\Arena.exe” “C:\Users\YourUser\Documents\Resolume Arena 5\Compositions\file.avc”

Can you please help me how to do it?

Thank you very much

Ondřej

What is " Resolume"?
What OS are you running, it looks like windoze from that path list?

Is there some keyboard short cut that could do this because if there is then it is simplest to send that control character to the PC with a Leonardo or a Micro Arduino board.