In PremierePro2 I used Flash 8-High Quality setting. There are no audiosettings but in the Audiocodec FlashVideo, MP3 and audio data rate 128 bps (stereo) are mentioned.
The audio quality starts with the recording. We used a CD recording of this group. With 2 cameras the Bluegrass Boogiemen playbacked 8 times the tune. The edit is done with 16 tracks for the 16 camera positions.
Phocas Kroon