<http://schema.org/thumbnailUrl>
<http://cdn1.tnwcdn.com/wp-content/blogs.dir/1/files/2011/08/earphones-520x245.jpg>
<http://thenextweb.com/media/2012/01/05/for-the-first-time-in-the-music-industry-digital-sales-surpass-physical-sales/>