So, has anyone ever noticed that it's not possible to link directly to audiobooks and other stuff on audible.com? Apparently, it has something to do with how they include session ID's in the URL.
For the audiobook reviews on my blog, I had to join their affiliate program just so I could use their link generator which enables affiliates to create links to specific audio programs.
Now, thanks to the product links in Audible's brand-spankin' new RSS feeds, (Subscribe to them here. Do it now.) you can link directly to products.
Full Disclosure: Audible is a current client of mine and I contributed to this religious conversion. (Although Mitch Ratcliffe is the missionary who laid all the groundwork.)