Plug your mp3 in, then open My Computer. You'll see your mp3 player as a removable disk. Now open LW & go to your library page. Put your cursor on the left hand edge of the page & drag it across to the right...now you should have both the pages visible, beside each other. Now you can drag from the library page into your player (hope I've explained this ok & not made things worse).

You can't plug your player in & have it show up in LW.