what u do is plug the proper psp usb cable into the top of the psp then into your pc turn on your psp on the menu on the far left near the top there will be a word says usb then your pc should say a new device has been detected blah blah.
instructions:-
1, right click ,explore my computer
2, find the psp on the removable disk
3,click the + you should see save data and system
4,create three folders called:-music,photo,video
5,then all you have to do is drag and drop MP3'S in to the music folder
ulti