; We only need to update the existing stream
    if (((!media[&#39;update&#39;] &amp;&amp; isAudioSendEnabled(media)) ||
            (media[&#39;update&#39;] &amp;&amp;
                (media[&#39;addAudio&#39;] || media[&#39;replaceAudio&#39;]))) &amp;&amp;
        stream.getAudioTracks() != null &amp;&amp;
        stream.getAudioTracks().length &gt; 0) {
      pluginHandle.myStream.addTrack(stream.getAudioTracks()[0]);
      if (Janus.unifiedPlan) {
        &#47;&#47; Use Transceivers
        Janus.log((m