Eagles co-founder Don Henley appeared before a Senate Judiciary Committee on Tuesday as the Internet song-swapping service Napster asked Congress to force publishers to offer their catalogs online. “As we sit here, there’s a Ping-Pong game going over our heads about business models when we don’t know how our rights are going to be protected,” said Henley, co-founder of the Recording Artists Coalition. A strong opponent of the music-sharing service, Henley said that artists worry specifically about being compensated for online performances. “There are a lot of excruciating details that need to be worked out in this new world,” he testified. (In some April 3 editions of the Daily, Henley was erroneously identified as a proponent of Napster. In fact, he is not. regrets the error.)