Html 5 audio tag custom controls?

You create your elements like so...

<audio id="yourAudio" preload='none'>
    <source src='the url to the audio' type='audio/wav' />
</audio>
<a href="#" id="audioControl">play!</a>

And add some functionality:

var yourAudio = document.getElementById('yourAudio'),
    ctrl = document.getElementById('audioControl');

ctrl.onclick = function () {

    // Update the Button
    var pause = ctrl.innerHTML === 'pause!';
    ctrl.innerHTML = pause ? 'play!' : 'pause!';

    // Update the Audio
    var method = pause ? 'pause' : 'play';
    yourAudio[method]();

    // Prevent Default Action
    return false;
};

Right now, the button is just simple text ("play!" or "pause!"), but you could do just about anything you wanted with CSS. Instead of setting the innerHTML, set the className and you're good to go!

After a lot of research, I found an easy way of eliminating and manipulating specific parts of the predefined controls.

Create your elements as you usually would, like so:

<audio autoPlay>
    <source src='audioUrl' type='audio/mpeg' />
</audio>

Then in the CSS file, you write the following:

/* Specifies the size of the audio container */
audio {
  width: 115px;
  height: 25px;
}

audio::-webkit-media-controls-panel {
  -webkit-justify-content: center;
  height: 25px;
}

/* Removes the timeline */
audio::-webkit-media-controls-timeline {
  display: none !important;
}

/* Removes the time stamp */
audio::-webkit-media-controls-current-time-display {
  display: none;
}
audio::-webkit-media-controls-time-remaining-display {
  display: none;
}

With this code, you should get a small and nice looking container with only mute-button, pause/play-button and the 'download-file'-tag.

For an overview of all the things you can modify, have a look here.

The following code will also remove the mute- and the play-button:

/* Removes mute-button */
audio::-webkit-media-controls-mute-button {
  display: none;
}

/* Removes play-button */
audio::-webkit-media-controls-play-button {
  display: none;
}