Here are the steps to follow:
1) Insert a Memory Stick
into the Memory Stick slot in the left side of the PSP. Depending on
how many files you want it to hold, you may need to get a larger one
than the stick that came with your system.
2) Turn on the PSP.
3) Plug a USB cable into the back of the PSP and into your PC or Mac. The
USB cable needs to have a Mini-B connector on one end (this plugs into
the PSP), and a standard USB connector on the other (this plugs into the
4) Scroll to the "Settings" icon on the home menu of your PSP.
5) Find the "USB Connection" icon in the "Settings" menu. Press the X
button. Your PSP will display the words "USB Mode" and your PC or Mac
will recognize it as a USB storage device.
6) Create a folder called "PSP" on the PSP Memory Stick (if there isn't one
already) -- it shows up as "Portable Storage Device" or something
similar -- (you can use Windows Explorer on a PC, or Finder on a Mac).
There should also be a folder called "MP_ROOT" (not inside the "PSP"
7) If they aren't there already, create folders called "PHOTO" and "MUSIC"
inside the "PSP" folder. There also should be a folder called "100MNV01"
inside the "MP_ROOT" folder.
8) Drag and drop files into the folders just as you would save files in another folder on your computer. Image files
go in the "PHOTO" folder, audio files
go in the "MUSIC" folder, and video files
go in the "100MNV01" folder.
9) Disconnect your PSP by first clicking on "Safely Remove Hardware" on the
bottom menu bar of a PC, or by "ejecting" the drive on the Mac (drag
the icon into the trash). Then unplug the USB cable and press the circle
button to return to the home menu.
This should help you to move those files.