Play album tracks on Groupees purchases page back-to-back

albumPlay.user.js

// ==UserScript==
// @name         Groupees Entire Album Playback
// @namespace    http://cyanic.vnd/groupees/albumPlay
// @version      1.0.0
// @description  Allows an entire album to be played instead of a single track at a time.
// @author       cyanic
// @match        https://groupees.com/purchases
// @grant        none
// ==/UserScript==

this.$ = window.$;

/*
 * Function hook jQuery plugin
 * version 1.0
 * author: Damien Antipa
 * http://github.com/dantipa/
 */
(function(window, $, undefined){

    /**
     * Hooks into a given method
     * 
     * @param method
     * @param fn
     */
    $.fn.hook = function (method, fn) {
        var def = $.fn[method];

        if (def) {
            $.fn[method] = function() {
                var r = def.apply(this, arguments); //original method
                fn(this, method, arguments); //injected method
                return r;
            }
        }
    }

})(window, window.jQuery);

$.fn.hook('html', function(el) {
    el.find('.track-list').each(function(i, e) {
        var audios = $(this).find('audio');
        audios.each(function(i, e) {
            $(e).bind('ended', function(){audios.eq(i + 1).next().click();});
            return i < audios.length - 1;
        });
    });
});