what i do for my youtube videos is
Step1 go to YouTube - Broadcast Yourself. and find the video you want and copy URL
Step2 go vixy.net : Online FLV Converter : Download online videos direct to PC / iPod / PSP. It's free! and then click convert to MP4 ipod/psp
Step3 copy and paste the URL to the big yellow box
Step 4 when its done go and download it and put on psp


