HOW CAN I ADD A DIGITAL DOWNLOAD FROM PS3 TO LAIR

i have a digital copy of a gundam dynasty warriors game that is the 4th installment - for ps3 i see that you have the first three already on here how do i pull a copy of my version so i can share with the world? this game was not released on a disk in NA and is digital only is there a way to hook my ps3 up to my pc in some way and transfer the file or something like that?