How to convert DC *.ADX sound files back to one *.AFS sound file?

[blackrose08]

Like my other friends up there i got the dvd9 version of 50 Cent Bulletproof, but this game is is a little bit more the my 4.7g Dvd can, like 2 gigs over. Please someone help on how to fit this game into a 4.7G DVD without loosing nice things like Music Videos; I like the idea of downsampling the songs format but the only problem is, I can't seem to find anywhere on how to do this kind of stuff...Please HELP I WANT TO PLAY THIS GAME!!!