Singer-songwriters Randy Newman, Tom Waits and sisters Ann and Nancy Wilson of the rock band Heart filed a $40 million copyright infringement on Tuesday against the popular San Diego-based Web site MP3.com. The suit claims that MP3.com illegally copied several thousand of the plaintiffs' songs digitally from their CDs and turned them into MP3 files for the site's My.MP3 service, which permits users to register their personal collection and access the music on any computer over the Web. The company paid the major record labels last year nearly $130 million in damages, which forced My.MP3.com service to shut down over violation in copyright laws. The site has since relaunched, having signed licensing agreements with the major labels. The artists' suit differs, as they are suing over the copyrighting of the songs themselves. "These artists retain ownership of their songs and only they have the right to bring this case," said the artists' attorney Bruce Van Dalsem to Reuters.