For some reason all of a sudden my psp is having issues when playing music. It's not a very big probably but it's slightly annoying. What happens is when I'm playing a song, if I turn the backlight off, when it reads from the memory stick (when the ms light flashes) my song glitches like a scratched CD playing in a stereo. It works fine when it finishes reading from the memory stick. This problem occurs only when the backlight is off. it happens both with and without headphones. Any help is appreciated.