Start up Amarok without your iPod connected. After Amarok has started connect your iPod.
We will need to add the device in order for Amarok to recognize it. Go to Settings → Configure Amarok (left image below) in the drop down menu. Then go to Media Devices. Click on Autodetect Devices (middle Image below). It will now find your iPod. (right image below) Close this window. Your iPod should now be connected, but if it isn't hit connect.