For OS X users, you can take a screenshot from the command line with /usr/sbin/screencapture, so putting together a little script to make a screenshot timelapse is pretty trivial. With that and ffmpeg you can replicate most of the functionality of my program in just a few lines of bash. :-)
Ooh, shiny. I had been using MonkeyJam, which has no CLI and an annoying user interface. Out of curiosity, using ffmpeg, do you know how one would both combine a series of still images and add an audio track to it?
(Classic version 'free forever'; doesn't seem to support stitching all the images together to export a video but should be do-able manually.)