The weird Pc sound problem or PLEASE HELP!

I can play mp3’s from my pc but as soon as I want to play Mpeg audio through my media player It goes silent…The speaker icon is still there, but no sound is playing.

Also When i play the same mpeg through another media player (powerdvd) it works fine.

I done all the basics, checked that the volume isnt on mute etc. but my WAVE audio just doesnt want to play. And for what its worth on FRIDAY night it was playing fine.

I don’t know WHAT to do anymore. I’ve tried re-installing the software and everything.

Thanks in advance