WMP 9 for Mac-STILL NO SOUND

I have a sh*tload of WMP files in which I can view the video but not the
audio because it uses ACELP.NET audio codecs. I couldn't wait for WMP
9 to come out becuase I though when it did I could play back these
videos WITH SOUND but guess what? WMP for Mac STILL does not play
back the sound in these clips!!!!! ARGHH, I still get the error message
"This file may not play correctly because it was compressed by using a
codec that is no supported"

What the hell is going on? Why did Microsoft leave this support out,
AGAIN???
..