I was trying to play some video clips today that were wmv files. I had installed the mplayer stuff from the livna repo, and I have been able to play most of the files I had fine. Today I found it didnt get all the codecs I needed to play the windows media file stuff. What I did was went to the mplayer site and downloaded the essential codecs package. Next as root I did
Then simply unpacked the tarball in this dir
tar xjvf essential-20060611.tar.bz2 && mv essential-20060611/* /usr/local/lib/win32
After that I just started using mplayer as normal and my wmv files played fine. I hope this will help someone else out getting these types of files to play.