You can't - not the way I think you're thinking :)
The layers in a timeline all play along with the playhead in that timeline.
However, you have to remember that movieclips have their own independent timelines, so that's the way you need to go.
You could have the continuously looping part in a movieclip placed on the main timeline, and have the main timeline play once (with a stop() action at the end).
If you wanted more control, put both parts in separate movieclips and use actionscript to control them. There are lots of ways of doing it - it all depends on exactly what you want.
__________________
Sualdam
|