Microsoft sprang into action after a technology blog published a story about a piece of software that could strip the DRM from downloaded Windows Media files.

After engadget writers posted a story to say that they had successfully stripped the DRM from tracks downloaded from Napster To Go, Microsoft issued a update to allow music download stores to plug the flaw in its DRM software that allowed the copy protection to be removed.

FairUse4WM losslessly removes the DRM from tracks that are part of Microsoft’s PlaysForSure system, which is used by many music download services including Napster and Yahoo Music.