Thanks so much, RUMBLEBOX.
I'm happy to make the source available to help others learn as I did. I've attached the source to this page. It wasn't intended to be shared (so it may not be the most readable to others), so let me know if you have any questions.
Note to all: the information in the pdxinfo file has been removed, so be sure to fill this out if you happen to use this code for another project.