Do a search in Sherlock (command F) for 'shared' . You'll probably turn up more than one folder. I suggest you move all your files into one and delete the other.

Limewire has two options relating to this:

Tools>Options>Saving is where your downloaded files are saved. Go to this option, click Browse and select your shared folder.

Tools>Options>Sharing is the location of the folder(s) that appear in the library window and that are shared. Make sure one of these locations is your shared folder or it won't show up in Limewire. If the location of your old/deleted shared folder appears here ,remove it.