Warner Music to Sell DRM-Free Songs Through Amazon.com

In the recording industry's latest move away from its reliance on digital locks to reduce piracy, the Warner Music Group said that it would sell songs and albums without anticopying software through Amazon's fledgling digital music service. The shift by Warner Music is another step in the decline of copy-protection software, which has led to consumer confusion over the jumble of incompatible schemes governing the use of digital music players and downloaded songs.