Which php file are you changing? contact-form.php?
The contact form is using flash and it's some kind of tool that I haven't seen before.
The flash object that has the form seems to use a contact-form.xml which has some config info in it (
http://www.ampedproductions.ca/contact-form.xml) but no destination email that I can see. And that php file
http://www.ampedproductions.ca/contact-form.php seems kind of weird.
If you change it does it give an error at all when it doesn't work?