1. This file declares a class, `Player`, instantiates it, and assigns it to a global `player` variable.
2. The `Player` class contains four methods:
    - `constructor()`
    - `playPause()`
    - `skipTo()`
    - `setVolume()`
3. The `constructor()` method sets initial values for the `currentlyPlaying`, `playState`, `volume`, and `soundObject` properties.
    - `currentlyPlaying` is set to the first item in `album.songs`.
    -  The initial `playState` is `"stopped"`.
    -  The `volume` is set to the number `80`.
    -  The `soundObject` instantiates a new `buzz.sound` object using the `soundFileUrl` property of `this.currentlyPlaying`. The `buzz` variable doesn't appear to be initialized here, so presumably it's a dependency loaded elsewhere.
4. The `playPause()` method accepts one parameter, `song`. It sets it to `this.currentlyPlaying` by default. It checks to see if `this.currentlyPlaying` is different from `song`, and if so, it:
    - Stops the `soundObject` property.
    - Removes the `"playing"` and `"paused"` classes from the `element` property of `this.currentlyPlaying`.
    - Sets `this.currentlyPlaying` to the function's parameter, `song`.
    - Changes the `playState` property to `"stopped"`.
    - Instantiates a new sound object using `this.currentlyPlaying`, which was just updated to `song`.

 - If `playState` has the property of `"paused"` or `"stopped"` then
    -Sets the volume of the `soundObject`
    -Plays the `soundObject with the `play` function
    -Changes the `playState` to `playing`
    -Removes the `paused` class from `this.currentlyPlaying` and replaces it with the `playing` class
 -if the `playstate` is anything other than `"paused"` or `"stopped"` then
    -The `this.soundObject` preforms the `pause` function
    -The `playState` is changed to `paused`
    -Removes the `playing` class from `this.currentlyPlaying` and replaces it with `paused`
5. The `skipTo()` method accepts one parameter, `percent`. It checks to see if `this.playState` does not equal `playing` and if it doesn't then it will have a return.
    -The `setTime` of `this.soundObject` will be shown as a percentage based on the entire duration of `this.soundObject`
6. The `setVolume()` method will accept one parameter, `percent`.
    -`this.volume` will be set to `percent`
    -`this.soundObject` will set the volume based on the `percent`
7. The constant `player` is reassigned to `Player()`