From the "Things you might want to know about technology" file.

Slashdot | The Rise of Steganography If the recording industry begins to include watermarks in its song files, Windows would refuse to play copyrighted music that was obtained illegally (as defined by the Digital Millenium Copyright Act, written by corporate lobbyists, enthusiastically passed by a Congress besotted with corporate money, and signed by a pliant President Clinton two years ago).