Added sound to the blog now..

You can also do this to your blog 

If you are using Blogengine.net Check Blog of Mads Kristensen

Otherwise you can go and check the website

http://www.odiogo.com/

http://blog.odiogo.com/

http://www.odiogo.com/faq_content_providers.php 

the main thing is that it is free, give it a try