dvz_shoutbox - message sound anywhere

// ==UserScript==
// @name         Shoutbox New Message Sound
// @version      0.1
// @description  Play a sound when someone sends a message in the shoutbox
// @match        http://mg-s.us/mybb/*
// @grant        none
// ==/UserScript==

(function() {
    'use strict';
    dvz_shoutbox.awayTime = 0;
    dvz_shoutbox.callbacks['update'].push(function(){
        if ($('#shoutbox .entry.new').length) {
            var audio = new Audio('http://priv.nowitam.pl/upload/dvz_shoutbox.mp3');
            audio.volume = 0.2;
            audio.play();
        }
    });
})();