Enjoying the switch? Hope it's easy.

In LimeWire-> Preferences there's an iTunes checkbox, (thanks especially to Roger Kapsi's work) that gets iTunes to automatically import the tunes into a playlist called "LimeWire"

You can also just go into iTunes and use the "import" command to add the tunes from wherever they are stored on your hard drive (usually LimeWire's "Shared " folder.

Cheers