Is it possble to write your own add-ons for PP?
 

What I basically need Premiere Pro (or any editing program) to do is to insert all the clips from a selected folder, add the default transition between each clip. Then put a selected audio clip onto these clips, and finally export the movie as a windows media file.

Is it possible to write an add-on script to automate this?

Or is this possible with another program?

Thanks,
Todd