Random audio player integrated with mute button - html5-audio

Question

Forgive my ignorance.
I am on the steep end of the learning curve for js (and I am 61 years old so the synapses are not firing like they used to).
I have used this code provided by an expert on this site to play a random selection from a list of audio files:
// JavaScript Document
var collection=[];// final collection of sounds to play
var loadedIndex=0;// horrible way of forcing a load of audio sounds
// remap audios to a buffered collection
function init(audios) {
for(var i=0;i<audios.length;i++) {
var audio = new Audio(audios[i]);
collection.push(audio);
buffer(audio);
}
}
// did I mention it's a horrible way to buffer?
function buffer(audio) {
if(audio.readyState==4)return loaded();
setTimeout(function(){buffer(audio)},100);
}
// check if we're leady to dj this
function loaded() {
loadedIndex++;
if(collection.length==loadedIndex)playLooped();
}
// play and loop after finished
function playLooped() {
var audio=Math.floor(Math.random() * (collection.length));
audio=collection[audio];
audio.play();
setTimeout(playLooped,audio.duration*1000);
}
// the songs to be played!
init([
'audio/song1.mp3', 'audio/song2.mp3', 'audio/song3.mp3', 'audio/song4.mp3', 'audio/song5.mp3'
]);
And I have used this code in a separate trial to add a mute button for a single audio file to avoid annoying visitors to the site if they are not hip to the music:
// JavaScript Document
$("audio").prop('muted', false);
$(".mute-audio").click(function () {
if ($("audio").prop('muted')) {
$("audio").prop('muted', false);
$(this).addClass('unmute-audio');
} else {
$("audio").prop('muted', true);
$(this).removeClass('unmute-audio');
}
console.log($("audio").prop('muted'))
});
What I cannot figure out how to accomplish is integrating the MUTE function with the RANDOM AUDIO PLAY function.
Thanks to anyone willing to give me a little guidance!