Guests: Williams has lined up George Lucas

Star Wars guru George Lucas and actors Christopher Reeve and Susan Sarandon will be among the guests to be heard in conversations on the site.

Oscar-winning screenwriter and author of The Cider House Rules John Irving is also set to join Williams in conversation, along with Mouse Hunt actor Nathan Lane and former Governor of New York Mario Cuomo.

"For the very first time, a Hollywood star of Robin Williams' calibre will produce and headline his own audio series on the Web,'' said Donald Katz, chairman of the company backing Williams' site, Audible Inc.

"Clearly, Robin can attract visionaries and thinkers, actors and authors, humanitarians and comedians, all of whom will be outstanding guests.

"The series will present an eclectic mix of entertaining spoken audio available through the immediacy of the Internet to his fans around the world.''

After an initial eight-week discount offer, subscribers will be charged for each internet show.