At first i thought it was because i nlited my OS.... but now i'm not so sure...

as soon as I installed AC3 (for my 5.1..... and its weird cuz its worked in the past) i can't play mp3s in media player anymore.

Says that the file format is not recognized or that the file its compressed in is not recognizable or something like that.

I installed every possible mp3 codec or AC3 related codec you can find... and still nada.

any help?