1. Connect your iPod to your computer.
2. When the iPod icon appears in the iTunes window (below Devices), select it.
3. If the Summary pane isn\'t showing, click the Summary tab. (This might appear as a "Settings" tab)
4. Make sure that "Manually manage music" is selected. (If you have an iPod that displays video, the checkbox says "Manually manage music and video.")
This will not work if you have an ipod shuffle. Whatever you want on a shuffle must remain in the music library of the computer that shuffle is set up to sync with.