Fedora :: Install Process - No Package MPlayer Available

I just reinstalled fedora and I cant run any movie now, I tried to install MPlayer, vlc, xine for 1 hr but dint work, no yum is found I don't know what's going on, vlc never worked for me I never got it but I never had problem installing mplayer

Code:
[root@localhost ~]# yum -y install mplayer mplayer-gui mplayer-skins mplayer-fonts gecko-mediaplayer
Loaded plugins: refresh-packagekit
Setting up Install Process
Parsing package install arguments
No package mplayer available.
No package mplayer-gui available.
No package mplayer-skins available.
No package mplayer-fonts available.
No package gecko-mediaplayer available.
Nothing to do

This is what I am getting same for vlc. I even tried yum -y install mplayer and very sort of thing but the above command worked for me previous time I don't know what's going on this time.