The older versions of Limewire stored your files in a different location than the new version does.

Old Version > (x>Documents and Settings>(which User You Are)Administrator>Shared

New Version is the same except after Administrator>My Documents>Limewire>Saved

Another way,if this does not help,use Windows Search and search for the Folder(s) Shared,or search for music files and note the location of the ones that you have gotten from Limewire.