Just do what I did was buy a 1 gig pro dou memory card and download a software called PSP VIDEO 9 from www.download.net
and then you can convert your avi,mpeg files to mp4's and I have 5 1/2 hour episodes and 4 music videos and still have 500 mb left on my 1 gig memory card.
Hope this helps
My dream is to visit 30 countries before the age of 30. 1/3 of the way there
Countries I have visited: Germany, Austria, Netherlands, Czech Republic, Poland, Italy, Mexico, USA,Vatican City, Australia