This is a problem on a mac in work. I believe the music transfer is done primarily on another machine, but we have recently moved a mac to where the ipod is connected to the stereo which pipes music throughout the workspace.
When plugging the ipod into the new mac, it doesn't seem to recognize it, though the ipod comes up in the source area of itunes. The music either on cd or already on the mac is dragged over to the ipod space in source the ipod doesn't accept the music.
I don't know anything about ipods yet, but just came across a quite perplexed person attempting to resolve this.
Thanks