“The Norwegian hacker famed for developing DVD encryption-cracking software has apparently struck again—this time breaking the locks on Apple Computer Inc.‘s wireless music streaming technology.

Jon Lech Johansen released on his Web site—defiantly named “So Sue Me”—a software key that helps to unlock the encryption Apple uses for its AirPort Express, a device that lets users broadcast digital music from Apple’s online iTunes Music Store on a stereo that’s not plugged into a computer.

Some security consultants say that with the key and another program he released, Johansen, also known as DVD Jon, has helped pave the way for other software applications other than Apple iTunes to work with AirPort Express.”