Due to patents and other copyrighted issues you will not find proprietary codes distributed using Fedora standard repository. In order to install proprietary codes one needs to use third party repository such as rpmfusion.org. After fresh install of Fedora the chances are high that you do not have MP3 support to play your music files. Here is a short howto to help you enable MP3 Layer1 codec support on Fedora Linux. First enable rpmfusion.org repository:
What remains to be done next is to install codes:
All done. Now you should be able to play MP3 files. Enjoy…!