It is really dumb to force you sync every computer you've ever hook your iPod on! But it is not 100% stupid that it can only update that single song you put into the library. I've checked the speed and know it is just refreshing the whole library.
However, if I remove something from the PC library, iPod will not remove them during sync ...
If possible, use other stuff to transfer single file, like any sane people will do.
However, if I remove something from the PC library, iPod will not remove them during sync ...
If possible, use other stuff to transfer single file, like any sane people will do.