This articles will show you how to enjoy YouTube videos on iPod,iPhone,Zune,PSP,Mobile phone
Step 1 Download and install Cucusoft YouTube Mate.
Step 2 Download YouTube videos.

Click the “download” button. A dialog pops up and put the video URL in the “video URL” text. Finally click “OK” button. In a short while the video will be downloaded.

Step 3.Click the “…”button to select the output of your videos and then click the “convert” button to start the conversion. In a short while it will be finished.
Tips: Put the videos on iPod/PSP/iPhone .
(1) For iPod/iPhone
You can upload the videos to the iTunes and then put it onto your iPod/iPhone.
(2) For PSP
You should create a new file named MP_ROOT under the root directory and then create a file named 100MNV01 under the MP_ROOT file. Put your video in the 100MNV01 files and you can enjoy your video on PSP.