In short, the Fedora Project encourages the use of open formats in place of restricted ones.
Fedora includes complete support for many freely-distributable formats. These include the Ogg media, Vorbis audio, Theora video, Speex audio, and FLAC audio formats. These freely-distributable formats are not encumbered by patent or license restrictions, and provide powerful and flexible alternatives to popular yet restricted formats such as MP3 that are not legally distributable with Fedora. For more information, refer to the Fedora Multimedia wiki at https://fedoraproject.org/wiki/Multimedia