If, like me, you do a lot of your work at home, I imagine you may like to listen to music as you labor through a translation, write a story or put together a PowerPoint presentation. And you probably find it convenient to listen to CDs on your computer.

Well, you may not be able to do so for much longer. That's because major international record labels, in a controversial move aimed at combating piracy, have begun introducing so-called stealth CDs in the United States and Europe. And it looks like Japan is next.

To prevent people from "burning" copies of CDs in violation of copyright law, stealth CDs are designed to play back normally on stereos and other audio-playback devices, but not on personal computers.