OK - I changed it to loading into the empty mc instance name "mtclip" and now it reloads the one that you are in at present - not the one before - file attached. So I am close but not there yet!
Is there a benefit or a specific reason why I would load the different external movies into empty mclips rather than levels? I see all these tutorials on using levels. In your opinion which is better form? Am I giving up something unknown to me in order to have this back button???
Also - if I can ask another question - should I have a preloader for each new .swf?? Do I put it on scene 1 of each one. Most are pretty small so it won't show up but some are a bit bigger and I am worried about that.