this has been bugging the hell out of me and I'm not really looking for a cure for it but I would like to discuss this and know if anybody else has had this probem.
I converted a video to MP4 and put it on my file server so I could download it through wifi since I lossed my USB cord. Well I named the files right and the folders were there but it still wouldn't show no matter what I did. Later I went and bought a new USB cord and transfered the same movie named the excact same and everything over to the PSP and it worked fine. Anybody else ever see this happen?