A group of US and Norwegian programmers have joined forces to crack Apple's digital rights management software when downloading iTunes.
They have developed a program called PyMusique, which allows users to legitimately enter the Apple site and buy iTunes, but then strip out the blocks that restrict the use of those tunes.
Their move may arouse the wrath of the music moguls as well as Apple, which so far hasn't said anything about its copyright system being breached.
PyMusique was initially written for Linux users but has now been developed for Windows users too, presenting an even bigger challenge to the music industry.
The programmers behind PyMusique are Travis Watkins, Cody Brocious and Jon Lech Johansen.
Norwegian Johansen was responsible with others for bringing out software six years ago that allowed users to copy film DVDs. He successfully contested legal action brought against him in Norway for that software, which still circulates on the internet.
All three programmers deny that PyMusique breaks any copyright law or Apple's user contract rules.