Music body presses antipiracy case

In what may become a new legal front in its war against online copying, the Recording Industry Association of America has asked a federal court for help in tracing an alleged peer-to-peer pirate. And in recent weeks, scads of so-called spoof files — repetitive loops or snippets filled with crackle and hiss — have been anonymously posted to the hugely popular sites where music fans illegally trade songs online, a tactic fully endorsed by the RIAA