Edit in JSFiddle

SC.initialize({
    client_id: "YOUR_CLIENT_ID"
});

SC.stream("/tracks/23132314", {
    autoPlay: true,
    ontimedcomments: function(comments){
        // we only handle the first comment for this timestamp
        var firstComment = comments[0];
        var text = "";
        $("<li/>").text(
            firstComment.user.username + " (@" + 
            Math.floor(firstComment.timestamp / 1000) + "s): " + 
            firstComment.body
        ).appendTo("#comments");
    }
});

<ol id="comments"></ol>

#comments {
    width: 400px;
    margin: auto;
    margin-top: 30px;
    font-family: "Helvetica";
    font-size: 14px;
}

#comments li {
    border-bottom: 1px solid #eee;
    padding-bottom: 5px;
    padding-top: 5px;
}