Помогите с написанием проигрователя треков похожего на Яндекс Музыку.

 var tracks = [...];  
var currentTrack = 0;  
var audio = new Audio();  
var playing = false;  
  
function updatePlayer() {  
  var trackimg = document.getElementById("trackimg");  
  var trackName = document.getElementById("trackName");  
  var author = document.getElementById("author");  
  var time = document.getElementById("time");  
  var proTime = document.getElementById("proTime");  
  var playpauseimg = document.getElementById("playpauseimg");  
  var playpause = document.getElementById("playpause");  
  
  audio.src = tracks[currentTrack].url;  
  trackimg.src = tracks[currentTrack].img;  
  
  trackName.textContent = tracks[currentTrack].name;  
  author.textContent = tracks[currentTrack].author;  
  
  time.textContent = "00:00";  
  proTime.textContent = "00:00 / " + formatTime(audio.duration);  
  
  if (playing) {  
    playpauseimg.innerHTML = '';  
    playpause.innerHTML = '';  
  } else {  
    playpauseimg.innerHTML = '';  
    playpause.innerHTML = '';  
  }  
}  
  
function formatTime(seconds) {  
  var minutes = Math.floor(seconds / 60);  
  var seconds = Math.floor(seconds % 60);  
  if (minutes < 10) minutes = "0" + minutes;  
  if (seconds < 10) seconds = "0" + seconds;  
  return minutes + ":" + seconds;  
}  
  
function togglePlay() {  
  if (playing) {  
    audio.pause();  
    playing = false;  
    updatePlayer();  
  } else {  
    audio.play();  
    playing = true;   
    updatePlayer();   
  }  
}  
  
function nextTrack() {  
  if (currentTrack < tracks.length - 1) {  
    currentTrack++;   
    updatePlayer();   
    if (playing) audio.play();   
  }  
}  
   
function prevTrack() {  
  if (currentTrack > 0) {  
    currentTrack--;   
    updatePlayer();   
    if (playing) audio.play();   
  }  
}  
   
document.getElementById("track").addEventListener("click", togglePlay);  
document.getElementById("playpause").addEventListener("click", togglePlay);  
document.getElementById("nextTrack").addEventListener("click", nextTrack);  
document.getElementById("prevTrack").addEventListener("click", prevTrack);  
   
audio.addEventListener("timeupdate", function() {   
  var time = document.getElementById("time");  
  var proTime = document.getElementById("proTime");  
   
  time.textContent = formatTime(audio.currentTime);  
  proTime.textContent = formatTime(audio.currentTime) + " / " + formatTime(audio.duration);  
});  
   
audio.addEventListener("ended", function() {  
  nextTrack();   
});