Hello! I'm using Movie Maker to prepare raw MP4 files of me practicing the banjo before I post them on YouTube. What I'd like to do is put a powerpoint slide of the sheet music I'm practicing up in a corner of the screen so that it can be seen while me playing can also be seen and heard around the little square of sheet music. If Movie Maker can't do this, does anyone know some free or cheap software that can? Thanks!