<div id="mediaplayer"></div>
<script>
$("#mediaplayer").kendoMediaPlayer({
    autoPlay: true,
    media: { title: "Kendo UI for jQuery: Welcome and Overview", source: "https://www.youtube.com/watch?v=UbkbVBNYZMc" }
});
var mediaPlayer = $("#mediaplayer").data("kendoMediaPlayer");
setTimeout(function () {
    var mediaPlayer = $("#mediaplayer").data("kendoMediaPlayer");

    // mute the audio
    mediaPlayer.mute(true);
    //gets if the player is currently muted
    mediaPlayer.mute();
    // unmute the audio
    mediaPlayer.mute(false);
  }, 1000);
</script>