	myTimeRecord.value.hi = 0;
	myTimeRecord.value.lo = 0;
	myTimeRecord.base = 0;
	myTimeRecord.scale = GetMovieTimeScale(myMovie);	
	myErr = MCDoAction(theMC, mcActionSetSelectionBegin, &myTimeRecord);
	if (myErr != noErr)
		return((OSErr)myErr);
	
	myTimeRecord.value.hi = 0;
	myTimeRecord.value.lo = GetMovieDuration(myMovie);	
	myTimeRecord.base = 0;
	myTimeRecord.scale = GetMovieTimeScale(myMovie);	
	myErr = MCDoAction(theMC, mcActionSetSelectionDuration, &myTimeRecord);