Video is fine but no sound

The video works fine but the sound doesn't work on anything mp3. avi. no nothin but thats only in my bsplayer, in divix it works fine and in windos media player too :evil: . Heh I must'ev rewened my player or somthing cause i have no idea what happened O.o; :?
I hope you people can help
and if you can't thanx anyways :)

Someone somewhere