In fedora you find a bug of gpgcheck but here is a solution of it
go to your terminal and become super user using
[root@localhost ~]# su –
now you have type following commands
link no.1:-
rpm -ivh http://download1.rpmfusion.org/free/fedora/rpmfusion-free-release-stable.noarch.rpm
link no.2:-yum install –nogpgcheck vlc
link no.3:-yum install –nogpgcheck gstreamer-plugins-good gstreamer-plugins-bad gstreamer-plugins-ugly
now go to the search option for your fedora apps and search for vlc media player,hope you had that