1. You will need to use the Manual update option of your iPod. Do not attempt to use sync!!! Otherwise yes, you will lose the songs already on your iPod.

2. Keep in mind that although you see a LimeWire playlist in iTunes, that list is simply for playing, it cannot be transferred to iPod. To get a better understanding, see How to transfer music to my iPod (& iTunes) {click on link}

Can also see http://www.gnutellaforums.com/open-d...tml#post129781 / Manual Updating of iPod