Audio jubox player Javascript

(function(){
  var player = document.querySelector('.player');
  player.addEventListener('click', function(e){
    var trigger = e.target;
    var audioSrc = trigger.dataset.src;
    var playing = document.querySelector('#playing');
    var roller = document.querySelector('#roller');
    var allSongs = document.querySelectorAll('.player li');

      for(var i = 0, len = allSongs.length; i < len; i++){
        allSongs[i].id = '';
      }

      // if(trigger.id == 'playing'){
      //   trigger.id = '';
      // }



    if(roller){
      if(playing){
        //console.dir(audioSrc);
        //console.dir(roller.attributes.src.value);
        if(audioSrc == roller.attributes.src.value){
          trigger.id = 'paused';
          roller.pause();
        } else{
          trigger.id = 'playing';
          roller.src = audioSrc;
          roller.play();
          console.log('other');
        }

      } else {
        roller.src = audioSrc;
        roller.play();
        trigger.id = 'playing';
      }

    } else {
      var audio = document.createElement('audio');
      audio.id = 'roller';
      document.body.appendChild(audio);

        trigger.id = 'playing';
        audio.src = audioSrc;
        audio.play();
    }


  }, false);
})()