Amazon has announced that it will launch a DRM-free digital music store later this year. The store will offer ?millions of songs,? from more than 12,000 record labels, all in DRM-free MP3 format. The store will include EMI Music?s catalog. ?Our MP3-only strategy means all the music that customers buy on Amazon is always DRM-free and plays on any device,? Jeff Bezos, Amazon.com founder and CEO, said. ?We?re?