The original way of putting files on the iPod Touch/iPhone is using command line SFTP (Secure FTP). This method is efficient but not well-received by the community (who wants to use command-line interface anyway). Then there's the method of using Cyberduck or FUGU, an easier way because of its graphical nature.
Now TUAW reports that someone has found a way to use AFP (AppleTalk Filing Protocol) to work on the iPod Touch/iPhone! IMHO, this is the better way to transfer files to your iDevice because it does not involve using a 3rd party application on your Mac (for Windows users... I think they can find a way to use this too).
I can't wait for this to become available in Installer.app so I can give it a spin.
Blogged with Flock