Getting contents of a streaming Blob to be sent to a Node.js Server

I already have a working page that uses the microphone to stream data to an <audio> tag.

However, I want the data sent to my <audio> tag to be harvested instead. How do you think can the data being streamed be harvested and continuously be streamed to a Node.js Server? (I am gonna use Binaryjs for the binary data streaming.)

This is the code that I have luckily. :)

<audio src="" id="audio" controls="controls">Sad twinkletoes does not have audio.</audio><br>
<br>
<span id="aw"></span>
<script>

try {
    navigator.getMedia = ( navigator.getUserMedia    || navigator.webkitGetUserMedia ||
                        navigator.mozGetUserMedia ||navigator.msGetUserMedia);

    navigator.getMedia ({
            audio: true
        },
        function(stream) {
            var audio = document.getElementById('audio');
            var streamer = window.URL.createObjectURL(stream);
            audio.src = streamer;
            var loopertime = 3;
            var looper = setInterval(function() {
                if(loopertime == 0) {
                    clearInterval(looper);
                    audio.play();
                    // stream starts here!
                    var spanner = document.getElementById('aw');
                    spanner.innerHTML = '<code>Streaming...</code>';
                    // this is where I want the data to be streamed...


                } else {
                    audio.play();
                    setTimeout(function() {
                        audio.pause();
                    },10);
                    loopertime--; // played and paused 3 times... getaround for audio only not working
                }
            },15);
        },
        function(err) {
            // No permissions
        }
    );
}

catch(e) {
    alert('Your browser does not support HTML5 Audio Media.');
    console.log(e);
}

</script>