I haven't as yet tried out the new LW 4.2.3 on windows (though I had heard it had xtra iTunes support.) But on Mac OSX the tunes are imported into BOTH the main library 'Library' & a playlist called 'Limewire'. You can drag & drop a tune from one playlist to another. I'd presume it'd be the same on windows. (By the way I use windows on a program called Virtual PC so it's not exactly equivalent & besides it works as fast as a snail with constipation.)