<http://schema.org/image>
<http://cdn1.tnwcdn.com/wp-content/blogs.dir/1/files/2011/07/speaker-520x245.jpg>
<http://thenextweb.com/google/2011/07/29/google-starts-to-open-up-its-cloud-music-service-with-user-invites-still-us-only/>