Making it all work in Kubuntu

Well, I installed Kubuntu yesterday and while the music stuff works great and it's better than windows already I still don't have all my videos playing or subtitles showing.  In one case I have wmv9 videos that don't play, in another it's just the subtitles not showing on an mkv file.  Anybody know how to make it work?

>>3
did you specifically install mplayer?  in ubuntu at least it doesn't come preinstalled, but it's in the repositories.  i also hope you were smart enough to install w32 codecs.