mediaplayers don't play sound


there is no sound when i play a movie.
the only mediaplayer that plays the audio is kaffeine.
amarok plays mp3 just fine.
Al the rest does not.
Not vlc, (s)mplayer.
An avi,mp3 or mkv file it does not matter.
I have installed all restricted codecs but i had to doe it 2 times,
the first time I did it the 1click method, but the installation whas interrupted.
could this be the problem?

You could try working your way through this guide:
Check your multimedia problem in ten steps - openSUSE Forums

i don’t know because i am new at this
but if i were you i would go to and look this problem up and see what is wrong!
if you find out what is wrong than great.