Easy! You just have to install a new version of the Totem Movie Player:
1. Using yum configuration.
2. Open a Terminal.
3. Become root: su
4. Now you have to remove the version of Totem that comes with Fedora,
and install the new version of Totem along with the files you need you play DVDs by:
echo -e “remove totem\n install totem-xine libdvdcss libdvdnav xine-lib-extras-nonfree\n run\n quit” | yum -y shell
And now you can play DVDs!
Also a good program is Xine!