...well, if you ask me,
(depends on what you wanna do with the movie

Think about importing the movie into a video-editing prog like PREMIERE", there exporting the visual part as a FILM-STRIP or single frame Imagefiles and editing it in PShop and reimporting it either in Flash (as we all used to do it in Flash 5 with a numbered series of bitmaps)...
The audio can be exported as .wav and maybe transformed into an mp3 if you care for filesize and also imported into Flash.
*TA-DAAAA!*: You have an editable Flashmovie that contains frames that could be edited pixel-by-pixel and the fitting sound as an mp3...
Is that what you want to do?!???
Cheers...