How to improve the quality of sound in final published animation?

The quality of sound when playing my flash file on the timeline in flash CS4 is excellent, however when I go to test movie the sounds quality becomes awful, like its being played in a tunnel on terrible speakers, my sound files are .wav files, am I missing a process I must do to ensure the quality of sound is carried through to the final published animation?

I am brand new to Flash and really trying to understand, so your help is much appreciated.

Thanks

Ellie

Flash automatically re-encodes audio as lower-quality MP3. You'll need to change your publish settings.

Go to File > Publish Settings. Under the Flash tab, you'll see options for audio quality.