You need to install the following packages in your package manager:
Code:
gstreamer0.10-ffmpeg
gstreamer0.10-pitfdll
gstreamer0.10-plugins-bad
gstreamer0.10-plugins-bad-multiverse
gstreamer0.10-plugins-ugly
gstreamer0.10-plugins-ugly-multiverse
libavcodec-unstripped-51
libdvdread3
libmp3lame0
Cheers,
Josh