<http://schema.org/description>
"YouTube doesn't allow the uploading of MP3's, but if you've spent more than 5 minutes searching for music on the site, you'll notice it's home to thousands, possibly millions, of songs ..."^^<http://www.w3.org/2001/XMLSchema#string>
<http://thenextweb.com/2009/09/28/upload-mp3-youtube/?utm_source=feedburner&utm_medium=feed&utm_campaign=Feed%3A+TheNextWeb+%28The+Next+Web+All+Stories%29>