WELL WORRY NO MORE, Because this tutorial will tell you how you can fix this.
Step One-

In Flash 8, go to file > "Publish Settings"
Step Two-

From there go to "flash" as indicated, then go down to where it says "Audio Stream" and then hit "Set"
Step Three-

Set all the settings to the above shown. Then hit OK.
PLEASE NOTE THAT THE CHECK BOX IS ENABLED WHEN YOU ADJUST THE BIT RATE TO A PROPER SETTING.
Step Four-

Go down to the selection under neath, click set.
Step Five-

Repeat step Three.
The final product should look something like this:

VIOLA, When you export your movies, the quality is crystal clear.
Dont mean to be a bugger, but can this be moved to the Official tutorials section please? Thanks. :3