So, to avoid legal disputes and limit costs, federal Webmasters will scale back the amount of multimedia materials they use.
The main library has over one million volumes, 3,750 periodical subscriptions, plus archives, manuscripts and multimedia materials.
Some sections within each unit include multimedia material, such as spoken multiple-choice questions.
Phillips Library: Built in 1962, the library's collection includes more than 99,000 books and 7,000 multimedia materials.
There are also "enhanced" editions with additional multimedia material, and versions in one to four volumes.
The distribution of multimedia material is emerging as one of the hottest businesses on the Internet.
It was later re-released in 2004 as a special edition with two bonus track and multimedia material.
Shockwave's multimedia material can be converted to run on the Web using a point-and-click program.
"A creative teacher must combine multimedia material," she added.
Many scholars, librarians and legal experts see rich promise for the use of multimedia materials in research and education.