Executescript no longer playing local audio files

I’ve used the execute script sandbox command to play audio at various stages of my testing, but lately it has stopped playing the clips. I just did some checking and a web link to a file is working OK, but I can’t get my local files to play. This worked previously using the following Target:

var audio = new Audio(‘file:///C:/Users/username/Music/Klaxon.mp3’); audio.play();

I can play the file in a Chrome tab just fine, so I don’t think that’s stopping anything. I’m just really confused. I’d rather not have to rely on web links for my sound clips since those aren’t always stable.