Amazon, entering the music distribution business free of copyright protection technology free

Amazon is considering entering music distribution business which DRM (copyright protection technology) has not been applied in the spring of 2007, and it is said that rumors say that we have already signed contracts with music companies last weekend .

The reason why we do not apply copyright protection technology is to make it compatible with all music players. Is it OK?

Details are as follows.
Computers.net: Amazon Soon Opening DRM-free MP3 Store

According to this article, it seems that the price per song, like the iTunes Store, is not roughly side by side, but rather that it adopts a different way for each song.

I'm wondering if I can destroy the iTunes Store's castle in the music distribution business, but before that I feel like it will be confusing due to copyright issues.