I haven't gone over the details of the service yet. One assumes that all items are either public domain, or there by permission.

There may be copyright issues in allowing library patrons to download their own copies from a central source.

Copyright Policy
Important: You must accept the enclosed User Agreement before you can download this audio book. Their notice:

This Internet site enables listeners to download audio books on to their personal computers, MP3 players and other personal devices. This audio book is for personal use only.

Users are responsible for complying with all applicable federal and state laws applicable to such content, including copyright laws.

Unauthorised copying, distribution, modification, public display, or public performance of copyrighted works is an infringement of the copyright holders' rights. As a condition to your account with us, you agree that you will not use our service to infringe the intellectual property rights of others in any way. We will terminate the accounts of users who infringe copyrights, or other intellectual property rights, of others. In addition, we reserve rights to terminate an account of a user and to block use of the our service permanently upon any single infringement of the rights of others in conjunction with use of the our service, or if we believe that user conduct is harmful to our interests, its affiliates, or other users, or for any other reason in our sole discretion, with or without cause.

For a couple of hundred bucks, you can get ALL of the books on a hard drive or set of DVDs.