Web Audio API: Start Multiple MediaElementAudioSourceNode's simultaneously

I am attempting to create a multitrack audio player using the Web Audio API. Currently my play-button click is handled like this...

function playProject(){
    var p = $(".play-button");
    p.hide();
    p.siblings('.pause-button').show();
    for( var i=0 ; i<audio.length ; i++ ){
        audio[i].play();
    }
}

And my Web Audio setup looks like this...

var audioCtx = new (window.AudioContext || window.webkitAudioContext)();

var audio = [];
var channelVolume = [];
var vol = audioCtx.createGain();

$(document).ready(function(){
var obj = JSON.parse('<?php echo $json ?>');

var audioPath = "../wp-content/themes/blankslate-child/projects/"+"<?php echo     $data->name ?>"+"/";

var sources = [];
var merger = audioCtx.createChannelMerger(2);

for(var i = 0; i<obj.length;i++){
    audio.push(new Audio());
    audio[i].src = audioPath+obj[i].name;
    audio[i].loop = true;
    sources.push(audioCtx.createMediaElementSource(audio[i]));
    channelVolume.push(audioCtx.createGain())
    sources[i].connect(channelVolume[i]);
    channelVolume[i].connect(merger,0,0);
}

merger.connect(vol);
vol.connect(audioCtx.destination);

})

Essentially I loop through all of my audio elements and play them. While this works, I feel that it might not be the cleanest way to do it. Is there any way to play all of the audio sources at the same time with a single function call?