Couldn't have been that important as the OP has yet to re-check this thread.
For music, Senuti works well.
For other files, I know you can SSH into the phone if it's jailbroken and copy and paste files that way, but that's a pain.
There are quite a few paid programs that offer file explorers that allow you to transfer your things from the phone to the computer. Just depends on how much you want to pay and what exactly you need to get off the phone.