_xscale bar problem

hey,
Back again for some advice. Can’t get enough of it.
I have a loading bar “loadingbar_mc” which tells me how much of an mp3 is loaded.
What I want is this to happen…

www.buildrebuild.com

For reasons that I won’t bore you with I need that button clip to be attached at the end of the loadingBar_mc at all times during the loading process.
I could attach it in the loadingBar_mc but the _xscale of the button would be shrunk at the start of the load only progressing to it’s full _xscale at the end.
Any help.Pleeeaaase.

Thx in advnce
Best

BRb