I belive iPod Agent is supposedly the best available at the moment for what you are needing...if I'm not mistaken, you can also use it in lieu of iTunes for your music management software (though I would recommend sticking with...
However, you do not have to install drivers for the iPod to use it as a backup hard drive.
Simply select the option, "enable disk use" when installing the iPod on your primary computer....and you can hook it up via usb or...
I'm restraining myself....
Ohhhhh....if only I were ridiculously wealthy and could buy everyone a bright, shiny, new iPod.
It sounds as though you could use your Sony discman as some sort of projectile-launching weapon at this...