audio.js

SC.Audio = SC.View.extend({
  classNames: ['sc-audio'],
  attributeBindings: ['src', 'autoplay', 'type', 'preload', 'loop', 'controls'],
  controls: false,
  autoplay: false,
  preload: true,
  loop: false,
  tagName: 'audio',
  type: "audio/mpeg",
  message: 'Your browser does not support the audio element.',
  isPlaying: false,
  _updateElementPlayState: function(){
    var playing = this.get('isPlaying');
    playing ? this.$().trigger('play') : this.$().trigger('pause')
  }.observes('isPlaying'),

  defaultTemplate: function() {
    var msg = this.get('message');
    return SC.Handlebars.compile('%@'.fmt(msg));
  }.property()
});

player.handlebars

{{view SC.Audio autoplay="true" srcBinding="parentView.audioUrl" isPlayingBinding="Nikola.currentSongController.isPlaying"}}