Looks like for some reason or other your LW shared has changed to your LW preferences folder. Try deleting your LW Preferences folder whilst LW is closed; instructions here: Point #2 & 3 in Fixes for Limewire (sample image included at bottom of page.)

The default location for download & shared files is:
C:\Documents and Settings\"your account name"\Shared

Double-check this is the location before opening LW up again. You could always search your computer for shared, or mp3, etc. to be certain. Or better still, search for incomplete. The incomplete folder is generally nearby your download/shared folder.