Bad Audio Quality when Testing Movie

Hi there…
First I want to apologize for my ignorance with Flash MX… But, I’ve learned a lot in the last few days…

MY PROBLEM…
When I test the audio in the library it sounds GREAT… if I listen to it with any player on my computer … it sounds GREAT…

BUT… when I publish the movie… or test the movie… it has really bad quality… like it’s compressed to much or something… like a telephone effect or something.

Is there a setting I’m missing? I goto other flash sites and the audio sounds great… what’s the deal…??