Which File Formats Are Supported?
Windows Media Player 11 plays back a wide variety of media file formats, but its coverage is not exhaustive, and a handful of very popular formats (mostly from companies that compete with Microsoft) are not supported in the Player. When you first run Windows Media Player, one of the setup options allows you to pick and choose which file formats will be associated with it; you can review and change these options any time by opening the Default Programs option from Control Panel or the Start menu, clicking Set Your Default Programs, choosing Windows Media Player from the list of programs, and finally clicking Choose Defaults For This Program.
The list includes the following supported formats:
Advanced Systems Format ...
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