vk.com music parser from browser console

pars.js

clear();
var t = $x('//*[@class="play_btn"]/input');
// var t = $$('div#post-23141788_12015 input[type=hidden]');
var ec=''; 
for(var i=0;i<t.length;i++)
{
    var str=t[i].value;
    ec+=' '+str.substring(0,str.length-4);
}
console.log(ec);

// then wget it