Here are the two links you need:

<script src="[<https://cdnjs.cloudflare.com/ajax/libs/p5.js/0.9.0/p5.js>](<https://cdnjs.cloudflare.com/ajax/libs/p5.js/0.9.0/p5.js>)"></script>
<script src="[<https://cdnjs.cloudflare.com/ajax/libs/p5.js/0.9.0/addons/p5.sound.min.js>](<https://cdnjs.cloudflare.com/ajax/libs/p5.js/0.9.0/addons/p5.sound.min.js>)"></script>