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Apparently, Microsoft has been so focused on getting Zune out the door in time for the mad holiday rush that it hasn't gotten around to supporting the player under its next-generation operating system. Though seemingly implausible, the screenshot below tells the story (while raising some questions at the same time). "This operating system is currently not supported by Zune," reads an error message when trying to install Zune software on the latest versions of Microsoft's own Windows Vista operating system.