You can learn more about Amazon Product Previews on the Amazon Associate website. The below amazon product link shows you how the product preview feature works.
The Amazon Product Preview script includes its own version of jQuery causing a conflict in some theme/plugin combinations. To resolve there is an optional noConflict option in the Admin panel that if checked remaps jQuery prior to the script inclusion enabling the Preview panels. If this does not resolve the issue please review your website to see if it includes multiple version of jQuery as they all need to be set to noConflict(true) for product previews to work. If you are having trouble getting product preview to function please contact me with your website and I can help debug the problem.
Download the latest version of the WPAA plugin to take advantage of this feature today.