HTML needed to produce this is:
<div style="text-align:center;"><a class="youtube-lazy-link" href="http://www.youtube.com/watch?v=SFiWfrLEqPw" style="width: 420px;height:315px;" title="Click to play!"><b>Mozart Fantasy in C minor</b> played by me</a></div>With the new style, it looks like this (actual embed):
Here's the code, place it before </head>. If you had previous version installed, you replace it with this code. And as always, you can edit CSS styles to your needs.
This script is installed on this blog.