Broken noise-box casperJS script

gistfile1.js

var casper = require('casper').create();
var casper2 = require('casper').create();
var roomName = 'caspersroom';
var audiofile = '';

casper.start('http://localhost:7001/', function() {
    this.test.assertTitle('NoiseBox', 'NoiseBox title is ok');
    this.test.assertExists('form[action="/host/"]', 'The form to create a new host exists');
    this.fill('form[action="/host/"]', {
        id: roomName
    }, true);
});

casper.then(function() {
    this.test.assertUrlMatch('/host/caspersroom', 'Form submitted to new host url');
    this.test.assertTextExists('Hosting "'+roomName+'"', 'New host identifies itself as existing');
});

casper.then(function(){
    casper2.start('http://localhost:7001/caspersroom', function() {
        this.test.assertUrlMatch(':7001/caspersroom', 'The client room exists');
        this.test.assertTextExists('Viewing "'+roomName+'"', 'The client room identifies itself');
        this.test.assertExists('a[href$=".mp3"]', 'An anchor element links to an mp3');
    });

    casper2.thenClick('a[href$=".mp3"]', function() {
        this.test.assertUrlMatch(':7001/caspersroom', 'Clicking the anchor does not change the page');
    });

    casper2.run(function() {
        this.test.done(4); // checks that all assertions have been executed
        this.test.renderResults(true);
    });
});

casper.then(function() {
    var self = this;
    casper.waitForSelector('audio[src$=".mp3"]', function() {
        self.test.assertExists('audio[src$=".mp3"]', 'The host has an audio element pointing to an mp3');
    });
});

casper.run(function() {
    this.test.done(5); // checks that all assertions have been executed
    this.test.renderResults(true);
});