“An emerging version of this conflict is being fought out now over standards for music purchased online. It boils down to this: will Apple support Microsoft’s “Windows Media Audio” (WMA) format for purchased music on the iPod music player? Or has the Apple-preferred (but not Apple-owned) “Advanced Audio Codec” (AAC) format that it uses through its own iTunes Music Store become a de facto standard that others - including Microsoft - will have to adjust to?”