I'm not sure about synching using the stick, but you could manually add the files to iTunes on the other computers, that is if their iTunes setting is to copy items to its own library. Or copy music files from the stick to the computer first before adding to iTunes. For synching, yes you would need another assistant software most likely.

Thank you L O R. Yes it would be doing it manually.

Blackhorse 70V, Would you know of a program that turns your Ipod into a memory stick transfer only type of machine? Thanks very much.