Download music from vk.com. 1. Run vk_download.js inside your music 2. Save result json to file "tracks.json" 3. Run "ruby vk_download.rb" Music will be in "./tracks"

vk_download.js

function async_init() {

    var element, type, src;
    var parent = document.getElementsByTagName('body');
    var cdn = new Array;

    cdn[0] = '//ajax.googleapis.com/ajax/libs/jquery/2.0.0/jquery.min.js';

    for (var i in cdn) {
        element = document.createElement('script');
        type    = document.createAttribute('type');
        src     = document.createAttribute('src');

        type.nodeValue = 'text/javascript';
        src.nodeValue  = cdn[i];

        element.setAttributeNode(type);
        element.setAttributeNode(src);
        document.body.insertBefore(element, parent);
    }

}

async_init()

function p(mes){ console.log(mes); }

var tracks = [];
$(".audio").each(function(){
  var audio = {}
  audio.url = $(".play_btn input", this).val();
  audio.url = audio.url.split(',')[0];
  audio.name = $(".title a", this).text();
  tracks.push(audio);
});

$('body').html(JSON.stringify(tracks));

vk_download.rb

require 'json'
require 'open-uri'

Dir.mkdir('tracks') unless Dir.exists?('tracks')

tracks = JSON.parse(File.read('tracks.json'))

tracks.each do |track|

  next if File.exists?("tracks/#{track['name']}")

  open("tracks/#{track['name']}", 'wb') do |file|
    file << open(track['url']).read
  end

  puts "#{track['name']} - downloaded"

end