Anyone can download them from the Internet, copy them and even alter them.

ECONOMIST: Open-source software

If you have a fast enough Internet connection, Napster allows you to call up a copy of almost any pop song from another user's computer, within a few seconds and without paying a penny.

ECONOMIST: Napster��s wake-up call

Besides playing MP3s skimmed from the Internet, it comes with a software "ripper" application so you can copy your CD collection to your PC's hard drive a process that takes only about 15 minutes per album and then to the Jukebox.

CNN: All Music, All the Time