Fatal error......mplayer

Hei, I have been installed mplayer and its running too in GUI. But the problem is that it can't play DVD/AudioCD....
When I put DVD into dvd-rom its automatic open by mplayer in GUI, and a window of fatal error open.

Fatal error: Could not intialize video filter(-vf) or video output(-vo).

And when I want to play Audio-cd using mplayer, this error is comming: Seek Faild
any way to resolv this.....????