Testing out a tactic to combat online piracy, a group of record companies asked a judge yesterday to order four major Internet service providers to block Americans from viewing a China-based Web site that offers thousands of copyrighted songs free of charge. The 13 record labels that filed the suit in Federal District Court for the Southern District of New York in Manhattan say the site, Listen4ever.com, is "even more egregious" than the music-sharing service Napster, which was shut by a court order. Through the AT&T network, the following comment appears on an otherwise blank web page: "No web site is configured at this address." Record Labels Want 4 Internet Providers to Block Music Site | 
