I've been working my way through the excellent book "Apple Pro Training Series - Aperture 3". I have encountered a problem when adding Audio to a Slideshow or more specifically adding content to the Aperture Audio Browser (page 385). The book suggests dragging the iLife Sound Effects folder into this Browser after closing the iPhoto disclosure triangle to create more space. Problem is I have no disclosure triangles on any of the items as well as that, all my iTunes albums are shown separately making it a very long list indeed. I've tried this out in a New User space with the same result.