Clear an flv playback component

Does anybody know how to clear an .flv playback component?
I have been using actionscript to call in .flvs and now i have to make a replay button.
If the video is already playing however it won’t restart. So I want to clear the playback component, however the fallowing scripts don’t work properly

_root.playback.unloadMovie() >> unloads playback component completly
_root.playback.clear() >> does nothing
_root.playback.removeMovieClip() >> does nothing
_root.playback.gotoAndPlay(1) >> does nothing
_root.playback.start() >> nothing

Any .flv masters out there?
Please help…
:h: