At it's heart it's composed of just two, short, independent functions. The makeSound function helps you load and play sound files (mp3, wav, ogg, and webm). The soundEffect function helps you generate a wide range of sound and music effects. These two functions are completely modular free of dependencies, so you can copy and paste whichever parts of them you need into your own projects. If you need it, there's also a sounds object with a helpful load method that makes it convenient to load and access sound files. You'll find all the code in the sound.js file. Take a look at the index.html file for a working example of all the features.