Using LW is legal. Using p2p apps is legal. Dwnlding material iusing p2p apps is legal so long as it's not copyright. If you're wanting to dwnld the latest movie to hit the cinema, then I think there could be some unhappy company people. If you're dwnlding music that's not copyright (& there's lots of music out there that's not copyright) then there's nothing to be concerned about. Dare I say it, if you were dwnding a rare recording that nobody even remembers anymore, then you probably shouldn't be to conscious. But that's a personal opinion only.