Go to LW's Library window, select Saved Files folder & press the Explore button & it'll open the folder up for you. This is basically your LW downld folder.
The only reason a playlist won't work from one day to the next is if yo move the audio files from the original location at the time yo made the playlist to the following time you attempt to open that playlist. Else you've deleted them for some reason.
Some hints on playlists here:
http://www.gnutellaforums.com/showth...threadid=32626 (half way down page.)