a step in the right direction
This is a good thing. iTunes is starting to offer music without DRM (digital rights management).
DRM is the stuff that makes your iTunes music work only with your iPod. It limits your ability to transfer your purchased music to other formats and devices.
But now that is changing with iTunes plus music. Now you can buy DRM-free music for $1.29 per song (instead of $.99). Plus it will be a higher bit-rate, which means better sound quality than before.
BUT, Apple has apparently left some info on your new iTunes Plus music. Each file will contain your username and email embedded in it. So think twice if you’re going to use a P2P network (i.e. limewire).