I'm not sure why you're having those sound issues. You might want to try deleting, then redownloading, and then reinstalling the game, as this usually fixes most issues. And you can contact the developers and let them know about the issue. You can use the form at the bottom of this page:
http://amanita-design.net/contact.htmlOne piece of good news here is that I did notice today when replaying this part with the iPad version that the order of the keys currently *does* match the desktop version....not sure when that was changed. So hopefully you'll be able to proceed by pressing 1 4 2 3 5 2 3.