for the supremely lazy who can't be bothered with all that typing, here's a bookmarklet you can use:
javascript:if(window.location.href.match(/youtube.com/))window.location.href='http://convyoutube.com'+window.location.href.match(/(youtube.com)(.*)/)[2];
~~I can't believe they don't include one on their page.~~
If you're not familiar with bookmarklets: drag the javascript text block
to your bookmark bar (change the name if you like) and then it's just a one button press conversion. enjoy.
edit: I wish they didn't put their website as the album name, that's what the comments' for guys.