I have converted a video file to .mp4 so that it will go on my PSP with the latest software. I have put the video in MP_ROOT > 100MNV01 and I have names the video file: M4V12345.mp4 I named the file so because I did a quick Google and all of what I have done above is what I have been told to to. When I get off of USB Mode on the PSP, I go to video's and the PSP can see the file but says it is corrupted! What gives. Can the PSP not play .mp4 which is one of the most common video files I have come across. PLEASE HELP BECAUSE AS TITLE SAYS I AM ABOUT TO THROW MY PSP OUT OF THE WINDOW!!! And P.S. I would buy PSPWare or iPSP but I don't really have the cash to spend. THANKS!!!