Recording time

Good afternoon,
I have an audio file loaded into one of my questions. I am running a Stop-Signal measure. I have instructed the participants to press the spacebar when they would like to stop the audiotape (the audiotape does not actually need to stop, I just need to know when they would stop it). Therefore, I need to record 1) the time someone presses play and 2) record the time from the play button press until they press the space bar. I have set this javascript on both the question and a timing block:

Qualtrics.SurveyEngine.addOnReady(function() {
var start = new Date();

function getTime(e)
  { e = e || window.event;
    var key = e.which || e.keyCode;
    if(key===32){
      var t = new Date() - start;

      Qualtrics.SurveyEngine.setEmbeddedData( 'embeddedsolutiontime', t)
      alert(t);
      document.removeEventListener('keydown', getTime);
      window.top.document.removeEventListener('keydown', getTime); 


               }

      }

document.addEventListener("keydown", getTime);
window.top.document.addEventListener('keydown', getTime); 


});

However, I can only get the first click (play button) and last click (arrow button for next page), I'm not getting the results for the spacebar.
I also think that if I can't get this type of recording, I could try to have the audio play automatically once they click onto that page, therefore the spacebar would be the first click, which Qualtrics timer settings do easily. How would I get the audio to play automatically instead of having to click the play button?
Any help with either of these two would be greatly appreciated!