Note that the licensing restrictions for content you purchase yourself for use, may be more restrictive.
For example the digital juice license says:

This is a non-exclusive, non-transferable license agreement between you and Digital Juice, Inc. Please read this agreement carefully before using the product. If you choose not to accept this agreement, you must return the product unused. By using any part of the Data, you are agreeing to the following terms:


1. The Data may only be used on ONE computer at any one time. For use on more than one computer at a time or for use and/or storage on a network designed for more than one user, you must acquire a special multi-user license from Digital Juice. Please call toll-free in the U.S. at 1.800.525.2203 or +1.352.369.0930 (International) for purchasing information.
http://www.digitaljuice.com/products...p?cid=1&pvid=2

You cant buy one copy of digital juice - and use it on more than one computer at any time.

In a copyright license the licensor is free to add any restrictions they want.
They grant you only a sub-set of the rights.

You have to read the small print on each and every license. IF you want to be in the clear.