How do I stop play bar jitteryness in jPlayer?

I'm having some issues with my play bar being super jittery on a site's implementation.

Getting this thing functioning and styled the same in a jsfiddle, so I have to apologize for not having one.

The example is here: http://mindevo.com/geewhiz/music-tracks.html

When you start playing the seek bar bounces very jittery and continues to do so the entire time.

How can I prevent this jitteryness?

Here is my initialize function (this page is actually a fall-back for the real AJAX-loaded page which resides on http://mindevo.com/geewhiz/ ) and for now includes only the example tracks for jplayer.

    function startPlaylist() {
    new jPlayerPlaylist({
        jPlayer: "#jquery_jplayer_1",
        cssSelectorAncestor: "#jp_container_1"
    }, [
            {
                title:"Cro Magnon Man",
                mp3:"http://www.jplayer.org/audio/mp3/TSP-01-Cro_magnon_man.mp3"
            },
            {
            title:"Your Face",
            mp3:"http://www.jplayer.org/audio/mp3/TSP-05-Your_face.mp3"
            },
            {
                title:"Cyber Sonnet",
                mp3:"http://www.jplayer.org/audio/mp3/TSP-07-Cybersonnet.mp3"
            },
            {
                title:"Tempered Song",
                mp3:"http://www.jplayer.org/audio/mp3/Miaow-01-Tempered-song.mp3"
            },
            {
                title:"Song 5 Song",
                mp3:"http://www.jplayer.org/audio/mp3/Miaow-01-Tempered-song.mp3"
            },
            {
                title:"8 Song",
                mp3:"http://www.jplayer.org/audio/mp3/Miaow-01-Tempered-song.mp3"
            }
        ], {
            swfPath: "../../dist/jplayer",
            loopOnPrevious: true,
            supplied: "mp3",
            loop: true,
            wmode: "window",
            useStateClassSkin: true,
            autoBlur: false,
            smoothPlayBar: true,
            keyEnabled: true,
            preload: "auto"
    });
}

Solution

Actually, setting "smoothPlayBar: false" solves this problem.

I am leaving this here for anyone else experiencing a jittery play-bar.