Internet Explorer 8 doesn’t support HTML5 <audio> or <video> tags which allow easy audio and video embedding, and Microsoft haven’t said whether they plan to implement them in IE9.
Fortunately, a workaround is closer thanks to Christian Adams who is working in a new plugin that would make IE capable of handling these new tags.
According to Christian, it’s in early development status so there are no progress bar or any control, but they should follow soon.
Check this screencast to see it in action:
Via Chris Double’s blog.