PSP Feeder does exactly that: gives your PSP various utilities: fills it with photos, videos, music, Internet favourites, and even an address book.
PSP Feeder converts and copies videos to be played in your PSP, and even generates slides of these videos that you can also import to iTunes. Do you want to add music? Simple: just drag and drop. Add a song list to iTunes? Load photos and change them to take up less space? Load windows for your Outlook Express contact list? You can do all this and more with PSP Feeder.
A program that, without doubt, will give new dimensions to your PSP, which also makes backups that you can save in your PC, restart in a simple way, installs games in your PSP using PBP files, etc.