If you missed parts 1 and 2 - and you are looking for the Chassidus of Birchas Kohanim - this is the class for you!  Rabbi Paltiel covers the Kabbala on Birchas Kohanim with Rabbeinu Bechaye, Rikanti, and Chassidus from Likutei Torah (reference on the way).  

MP3

 1 hour, 10 minutes, 14 seconds - 32.2 MB