Hi, recently I discovered that I could get downloadable content for project diva 2, I've got the files and all but I'm not sure how to install it into the game.

I'm running on 6.20 PRO-B5

The downloaded files are within 2 folders, PSP and ?????2
the PSP folder containing SAVEDATA and THEME
whilse the ?????2 folder has all these songs in .mp3 format

The site that I got these files from contain no instructions so I was wondering if I could get help here. Any help is muchly appreciated.