Found this in Digg. Click on the 'Lire la vidéo' link. Supposedly French scientists have been able to extract audio from the grooves in ancient pottery, much like a vinyl lp. Hard to say if it's true yet. Hopefully an English translation will pop up. If it is true, it's the most interesting archeological discovery in a long time.
http://www.zalea.org/article.php3?id_article=496