If you've been keeping tabs on Apple's war against DRM, you probably already know that users can now download DRM-free tracks from the iTunes store. But what you probably didn't know is that while you're able to download all the high-quality music you want, sharing it with others might not be such a good idea, as you could probably end up sharing your account info along with your playlist.

And no, we're not kidding. Try these simple steps to see that we're dead serious about this.

1. Launch Terminal.
2. Go to one of your iTunes plus downloads. Try downloading a song (an iTunes plus single of the week would do).
3. Use the UNIX "strings" command to take a gander at the text in your data and grep to search for your own name. (strings 01 Ooh La.m4a | grep name)
4. Similarly, you can try to open all the strings in TextEdit. (strings 01 Ooh La.m4a | open -f.)

If you did it correctly, you'll be able to find your own name embedded in that music file you've just downloaded - which would pretty much leave a direct trail to you should you torrent the songs you've just downloaded. So think first before making any rash decisions about illegal file-sharing - you may be giving away more than just free music.