Record labels say CD sales have plummeted as a result of copies--and copies of copies. Now the labels are testing technology that would limit the number of times a CD, or its copy, could be burned.

Fearful of consumer backlash, major record labels in the United States have slowed controversial plans for making CDs more difficult to copy, even as tension over online music piracy mounts. Last year ...

Record labels and Microsoft are in discussions about ways that the next generation of the Windows operating system, code-named Longhorn, can support copy-protected CD technology. The music labels, in ...