There are a lot of solutions to getting your hands on files, video and audio remotely. You can do it on your own configuring firewalls. Apple had iDisk, but that is slowly fading and it's going to be dead next year unless Apple changes its mind. Of the many methods I've seen, Dane-Elec has come up with a product that is both easy and secure. It's called the my-Ditto system. It consists of an external hard drive you attach to your Mac or PC via ethernet. Essentially it's a NAS, or network attached storage. Once it's up and running, you can access your files from any remote computer via a secure USB key
