ClickSnd/click.js

var sndsrc;
var click = new Audio();
chrome.webNavigation.onBeforeNavigate.addListener((details)=>{
	if (!details.url.startsWith("moz-extension://") && !details.url.startsWith("about:")) {
		if (click.src) click.play();
	}
});

chrome.storage.local.get({sound: null}, function({sound}) {
	click.src = sound;
});

chrome.storage.local.onChanged.addListener((changes)=>{
	click.src = changes.sound.newValue;
});