I am with Slingshot and have no luck getting audio attachments to http://www.slideshare.net embedded content.
Here is an example of Slideshare with an audio file, http://www.priebsch.de/2009/03/managing-the-software-life-cycle-of-a-php-application/
I can never get these to play, does anyone else get this??
Could it be the Slingshot cache failing like it did with embedded youtube content sometime back.