title: How to inject a Renderer to SimpleExoPlayer
body: <p>I use Exoplayer 2.9.0 and Audio 360
  There are two renderers:</p>
  
  <pre><code>val videoRenderer = MediaCodecVideoRenderer(mActivity, MediaCodecSelector.DEFAULT)
  val audioRenderer = OpusRenderer(mVideoHelper.audio360Sink)
  </code></pre>
  
  <p>I know how to inject it to an Exoplayer Object:</p>
  
  <pre><code>val render = arrayOf(videoRenderer, audioRenderer)
  Exoplyer exoPlayer = ExoPlayerFactory.newInstance(render ,DefaultTrackSelector())
  </code></pre>
  
  <p>However, I only use SimpleExoPlayer. I wonder how to do the same for SimpleExoPlayer object?  Alternatively, Is there a way to pass an ExoPlayer to a SimpleExoPlayer object ?
  Thanks,</p>