Rev app to pull data from Amazon

[RGould8 at aol.com]

Say, has anyone here ever written any Rev apps that pull data from Amazon, 
using the Amazon Web Services API?   

For instance, an app that allows the user to type in a search term for CD's, 
and returns a list of Amazon CD's including album covers?

If so, could I see how you accomplished such a task?   Do I need to get one 
of the Amazon security-service certificates in order to do this?