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Using File Name Extensions

A file name extension provides an ISV with information about the rendering requirements of an application that uses that particular extension, and enables content authors to target general types of players (for example, the .wma extension should be used for Jukebox-type applications).

Topic Description
File Name Extension Guidelines Describes which types of files and applications should use which file name extensions.
File Name Extension Descriptions Describes the file name extensions, their MIME types, and target content associated with the extension

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