function media_track_play(s, clip)
    {
        var vName = clip.url;
        var vLength = clip.fullDuration;
//alert("in play");
        s.loadModule("Media");
// alert("opening media for " + vName + " " + vLength);
        s.Media.open( vName, vLength, "player" );
//        s.Media.trackVars("eVar1");
//        s.Media.trackEvents("event1");
//        s.eVar1 = vName + "test";
//alert("s.Media: " + s.Media);
//alert("calling play");
        s.Media.play(vName,0);
//alert("play called");
        return;
    } 
    function media_track_stop(s, clip)
    {
//alert("media track stop for " + clip);
         var ci = clip.url;
//alert("stop called for " + ci + " " + clip.fullDuration);
         s.Media.stop(ci,clip.fullDuration);
//alert("calling close");
         s.Media.close(ci);
//alert("closed");
        return; 
    }