Changes to Amazon API Requires AWS Account
Previous versions of Alexandria included an Amazon AWS Access Key ID. From August 15 2009, Amazon have changed their "Product Advertising API" so each request must be authenticated, requiring a Secret Access Key. It is not possible for us to distribute secret keys to users. So, in order to continue using the Amazon provider you will need to sign up for your own free AWS account. Once you have signed in, you will find your "Access Identifiers" under the link to "Your Account". Launch Alexandria 0.6.5 and enter your identifiers into your provider preferences for Amazon.
You don't require an Amazon AWS account in order to use Alexandria's other providers. So, if you don't want to sign up for an AWS account, you can leave the Amazon settings blank and Alexandria will simply not search Amazon when looking up books.