Více audio přehrávačů na stránce

<audio id="music" preload="true">
            <source src="Viktor_Vlasov_Basso_ostinato.mp3" type="audio/mp3">
  </audio>
<div id="audioplayer2">
  <button id="pButton2" class="play" onclick="play()">
    </button>
    <div id="timeline2">
      <div id="playhead2"></div>
    </div>
</div> 
<script type="text/javascript">

var music = document.getElementById('music'); // id for audio element

var pButton = document.getElementById('pButton2'); // play button

var playhead = document.getElementById('playhead2'); // playhead

var timeline = document.getElementById('timeline2'); // timeline
var duration; // Duration of audio clip
// 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>

#audioplayer2{
    width: 350px;
    height: 30px;
    margin-left:20px;
    margin-top:-10px;
}


#pButton2{
    height:50px; 
    width: 50px;
    margin-top:-10px;
    border: none;
    background-size: 50% 50%;
    background-repeat: no-repeat;
    background-position: center;
    float:left;
    outline:none;
    background-color:transparent;
}
.play{
    background-image: url(play.png);
}

.pause{
    background-image: url(stop.png);
}

#timeline2{
    width: 250px;
    height: 46px;
    margin-top: -10px;
    float: left;
    border:none;
    background-image:url(line.png);
  
}

#playhead2{
    width: 29px;
    height: 26px;
    background-image:url(hlava.png);
    background-repeat:no-repeat;

}