I am a total newbie--this should be an easy answer--Help appreciated.
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I have an existing movie with sound, actions, etc. When I create a new layer, insert a keyframe and modify it to play a short sound,looped--it seems to blank out all the keyframes in that layer preceding it and starts playing as soon as the movie does instead of at the designated keyframe. Worse, it makes the movie all choppy visually and plays over an intro track which starts at the beginning of its own layer.

I've tryed it as an "event" and a 'start" sound--still the problem. I've also gone in and tried to clear, reinsert frames preceding the sound but nothing changes.
__________________________________________________ __________What gives? Am I just stupid or is there a fix here?

Thanks.