How did you install VLC, form an rpm file or???
Visit/See/Follow:
http://dag.wieers.com/rpm/FAQ.php#B
B2. How to configure to use RPMforge ?
B4. How do I use Yum ?
After yum is installed do: yum install vlc
Personally I like mplayer and the mplayerplug-in package for this better myself, same basic thing after yum is installed; yum install mplayer mplayerplug-in