$(document).ready(function() {
    $("#jquery_jplayer_1").jPlayer({
        ready: function () {
            $(this).jPlayer("setMedia", {
                mp3: "./images/bg-score.mp3"
            }).jPlayer("play"); // auto play
        },
        ended: function (event) {
            $(this).jPlayer("play");
        },
        swfPath: "images",
        supplied: "mp3"
    });
    $("#jquery_jplayer_1").jPlayer("volume", 0.4); 
});