If you are using the latest firmware and the media sharing functionality and are talking about transferring films/photos/music locally to the device, then when browsing the media share that you've exported from your PC, there is an option in the menu to copy. This copies the files locally to the PS3 and seems to work well. Not as good as FTP, but works all the same and none of that RedKawa file server business that you had to use in the past.