مشکل در ساخت audio با استایل اختصاصی

[M.Javad 684]

سلام یک تگ audio اختصاصی برای قالب دارم میسازم و به مشکل خوردم موقع play و pause در کنوسل مرورگر چندتا پیغام خطا میده لطفا بررسی کنید

http://codepen.io/jaboli/pen/grWzwv

دکمه play و puase چون بکگراندش سفیده دیده نمیشه ولی هستش ببینید مشکل از کدوم بخشه

[M.Javad 684]

اگر در این دمو دقت کنید کار نمیکنه دکمه هاش

http://demo.talarwp.com/avang/

[M.Javad 684]

اساتید کماکان مشکل دارم

کد html

<audio id="music" preload="true">
							  <source src="http://www.alexkatz.me/codepen/music/interlude.mp3">
										<source src="http://www.alexkatz.me/codepen/music/interlude.ogg">
								</audio>
							<div id="audioplayer">
								<button id="pButton" class="play" onclick="play()"></button>
							  <div id="timeline">    
									  <div id="playhead"></div>
							  </div>
							</div>

کد جاوا اسکریپت

		<script language="javascript">
		jQuery(function($){
var music = document.getElementById('music'); // id for audio element
var duration; // Duration of audio clip
var pButton = document.getElementById('pButton'); // play button

var playhead = document.getElementById('playhead'); // playhead

var timeline = document.getElementById('timeline'); // timeline
// timeline width adjusted for playhead
var timelineWidth = timeline.offsetWidth - playhead.offsetWidth;

// timeupdate event listener
music.addEventListener("timeupdate", timeUpdate, false);

//Makes timeline clickable
timeline.addEventListener("click", function (event) {
    moveplayhead(event);
    music.currentTime = duration * clickPercent(event);
}, false);

// returns click as decimal (.77) of the total timelineWidth
function clickPercent(e) {
    return (e.pageX - timeline.offsetLeft) / timelineWidth;
}

// Makes playhead draggable 
playhead.addEventListener('mousedown', mouseDown, false);
window.addEventListener('mouseup', mouseUp, false);

// Boolean value so that mouse is moved on mouseUp only when the playhead is released 
var onplayhead = false;
// mouseDown EventListener
function mouseDown() {
    onplayhead = true;
    window.addEventListener('mousemove', moveplayhead, true);
    music.removeEventListener('timeupdate', timeUpdate, false);
}
// mouseUp EventListener
// getting input from all mouse clicks
function mouseUp(e) {
    if (onplayhead == true) {
        moveplayhead(e);
        window.removeEventListener('mousemove', moveplayhead, true);
        // change current time
        music.currentTime = duration * clickPercent(e);
        music.addEventListener('timeupdate', timeUpdate, false);
    }
    onplayhead = false;
}
// mousemove EventListener
// Moves playhead as user drags
function moveplayhead(e) {
    var newMargLeft = e.pageX - timeline.offsetLeft;
    if (newMargLeft >= 0 && newMargLeft <= timelineWidth) {
        playhead.style.marginLeft = newMargLeft + "px";
    }
    if (newMargLeft < 0) {
        playhead.style.marginLeft = "0px";
    }
    if (newMargLeft > timelineWidth) {
        playhead.style.marginLeft = timelineWidth + "px";
    }
}

// timeUpdate 
// Synchronizes playhead position with current point in audio 
function timeUpdate() {
    var playPercent = timelineWidth * (music.currentTime / duration);
    playhead.style.marginLeft = playPercent + "px";
    if (music.currentTime == duration) {
        pButton.className = "";
        pButton.className = "play";
    }
}

//Play and Pause
function play() {
    // start music
    if (music.paused) {
        music.play();
        // remove play, add pause
        pButton.className = "";
        pButton.className = "pause";
    } else { // pause music
        music.pause();
        // remove pause, add play
        pButton.className = "";
        pButton.className = "play";
    }
}

// Gets audio file duration
music.addEventListener("canplaythrough", function () {
    duration = music.duration;  
}, false);



});
		</script>

پیغام اررور

(index):225 Uncaught ReferenceError: play is not defined