Why does my iPod sync but say there are no songs?

My ipod shuffle wont sync any more songs. =/?

• I currently have 73 songs on my ipod shuffle, and now when I try to sync more, for some reason it doesn't work! Thats not the only problem, though. Say I originally downloaded my itunes library onto one computer, when I try to add more songs using another computer with itunes, it doesn't work, and it says I could only sync with one library at a time. It really irritates me, and I don't like downloading songs from one computer. Yes, I know this is confusing, but if any one gets my question and could help, it would really be appreciated! Oh, and since my songs aren't downloading from this computer, when I try to drag all my songs from itunes to a folder to send it to another computer, not all songs get into the folder, only a few do. =/ ahh so annoying! Dx

• Answer:

  If your 2 computers are connected the same high-speed router, you can set folders and files to be shared over the network. Then try to drag and drop them into itunes. About syncing to the ipod. You can try formating the ipod through mycomputer then restoring it with itunes, but if you do this you will lose all your songs.