I utilize animated flash big time for cast characters in director and found best (and most time fastest) way is to set [poser] frame rate/keying to same as flash movie then save as bitmaps (I usually want a transparent background so use png format) not the swf movie since it vectorizes. In flash just insert new symbol movie, Import to stage of new symbol, by selecting the very first frame bitmap and a dialog will open saying - Looks like a series want to import all? Say yes and all will be loaded properly and set evenly on stage. then insert your sound in another layer above the stage - have yet to have this not sinc up and work. Been doing this for around 2 years and actually making a decent living - contracting and working in my PJs at home ;-).