Not running the game itself, but running the test in the maker.
The way I did it was playing it in the test mode, and activating all the events that triggered images and sounds at least once.
Then I copied the save folder from the project files, into the output game files after exporting. I run the game in browser via Itch.io to compare to previous builds (which all had issues loading images and sound the first time around) and it worked as intended for all but a single image I deliberately had not pre-loaded for comparison.
My project at the moment is still small so I can run though all events in only a few minutes.