We commissioned Jonathan Mann to write a song about our book, which is now for sale to the general public via Amazon: https://www.youtube.com/watch?v=JJj0B2AMEoI http://www.amazon.com/gp/product/0991439902/ref=cm_sw_r_tw_myi?m=A3RKNSU4IR2XGR
@kenleyneufeld I love Screenflow but Screeny has been good as well in the past. I believe both are in the MAS. Have not used Screeny in a while though. Screenflow is supported outside of the MAS and will allow for download trial before purchase.