That's awkward. Normally, the latest software support the latest formats... but Windows Media Player works the other way: with WMP 10, I cant display the *.MP4 psp format videos...but with the old WMP 6.4.09, I can! wow!
klite codec. Thank you because you made me realize that alone, WMP6 wont play *.MP4 psp videos. After installing the klite codec, it does.