there are some instructables that explain how to get you tube to i pod but i haven't got any to work on my Sansa so i decided to make my own. =) (this is my first instructable) and it is pretty easy.
(note: you must be running fire fox) don't forget to rate
Step 2: Download Net Video Hunter
Step 3: Hard Part
open you tube and pick a video you would like and let it load when your done watching it click on the net video hunter (nvh) now fallow the pics
Step 4: Switch
open the prism video converter software, plug in sansa and follow the pics
Step 5: Your Done!
now unplug your Sansa and check in your videos it should be there if not private message me and i will try to help