Soundcloud SDK - actual position

HTML

<script src="//connect.soundcloud.com/sdk.js"></script>
<div id="result"></div>

JavaScript

SC.initialize({
    client_id: "p951k1fWI65LGjFq9FwJXyvIl4lkxoZo",
   // redirect_uri: "http://jsfiddle.net/iambnz/LH3E4/",
  });

var page_size = 200;

// permalink to a track
var track_url = 'https://soundcloud.com/innervisions/essential-mix-september-2013';

SC.get('/resolve', { url: track_url }, function(track) {
    SC.stream("/tracks/" + track.id, { 
        autoPlay: true,
            whileplaying: function () {
            console.log(this.position);    
            console.log("track is playing - whileplaying");}
       
    });
});