it's a local webserver. sorry.
the weird thing is youtube in an iframe works if the html file is viewed straight from your computer, the file itself, but it doesn't work when it's being hosted on a web server
perhaps youtube, when viewed in iframe, checks the parent url to see if it's a real domain name, and then disallows viewing youtube in the iframe? but not if the url in the parent window is a file path?? weird..