Have random button change from off to on state

[javascriptcoding5678]

What I want to do is have a random button turn from off to on when an image before it is clicked.

How it would work: You would press the blue play image and then one of the buttons would change from off to on.

How would I be able to do that here?

Currently when you press the blue play image nothing happens, just the buttons appear on the screen. Then you have to click again to turn one of them on.

https://jsfiddle.net/b9rxf7cj/

(function manageCoverb() {

  function show(el) {
    el.classList.remove("hide");
  }

  function hide(el) {
    el.classList.add("hide");
  }

  function coverClickHandler(evt) {
    const cover = evt.currentTarget;
    hide(cover);
    const theplay = cover.parentElement.querySelector(".playa");
    hide(theplay);
    const thewrap = cover.parentElement.querySelector(".containerb");
    show(thewrap);
  }

  const cover = document.querySelector(".playb");
  cover.addEventListener("click", coverClickHandler);
}());

(function initPlayButtons() {

  function getButtonContainer(el) {
    while (el.classList.contains("playButton") === false) {
      el = el.parentNode;
    }
    return el;
  }

  function getPlay(button) {
    return button;
  }

  function showPlayButton(button) {
    button.classList.remove("active");
  }

  function isPlaying(button) {
    const play = getPlay(button);
    return play.classList.contains("active");
  }

  function pauseAllButtons() {
    let buttons = document.querySelectorAll(".playButton");
    buttons.forEach(function hidePause(buttons) {
      if (isPlaying(buttons)) {
        showPlayButton(buttons);
      }
    });
  }

  function showPauseButton(button) {
    pauseAllButtons();
    button.classList.add("active");
  }

  function getAudio() {
    return document.querySelector("audio");
  }

  function playAudio(player, src) {
    player.volume = 1.0;
    if (player.getAttribute("src") !== src) {
      player.setAttribute("src", src);
    }
    player.play();
  }

  function showButton(button, opts) {
    if (opts.playing) {
      showPlayButton(button);
    } else {
      showPauseButton(button);
    }
  }

  function pauseAudio(player) {
    player.pause();
  }

  function manageAudio(player, opts) {
    if (opts.playing) {
      pauseAudio(player);
    } else {
      playAudio(player, opts.src);
    }
  }

  function playButton(button) {
    const player = getAudio();
    const playing = isPlaying(button);
    showButton(button, {
      playing
    });
    manageAudio(player, {
      playing,
      src: button.getAttribute("data-audio")
    });
  }

  function playButtonClickHandler(evt) {
    const button = getButtonContainer(evt.target);
    playButton(button);
  }

  const playButtons = document.querySelectorAll(".button");
  playButtons.forEach(function addHandler(el) {
    el.addEventListener("click", playButtonClickHandler);
  });
}());