Discovered add-on levels! :)

I recently tried this game after seeing how much some fishies recommended it, and I found that I also really liked it. Today, I went to the developer's site (found by googling the developer's name which is on the main screen that shows immediately after opening game, and found that there are many more additional levels posted in their forums that can be added to the BF version of Pathstorm. However, I haven't yet figured out how to get them loaded into the game. Has anyone else found this yet and been able to play the additional levels? If so, how did you get them into the game? I've tried following the directions they have posted, but it's not working for me at this point.

Any suggestions/comments would be greatly appreciated!!

TIA!