Kit Roane of US News writes:
At issue is the software embedded in the songs bought from the iTunes music store that prevents them from being played on rival devices.
Norway, Denmark, and Sweden have demanded that Apple strip the blocking software from its iTunes service. France is readying legislation that enforces such interoperability, and Finland may follow suit. Although no action has been taken in the United Kingdom, the record industry's trade body there has called for a removal of the software.
Meanwhile, protests have begun cropping up in the United States. A group called DefectivebyDesign rallied demonstrators at eight Apple stores across the country last Saturday, including the company's new 24-hour store in Manhattan. Wearing hazmat suits, they hoisted signs and handed out leaflets calling for Apple to stop using the blocking software.