So what's wrong with that. You can share as many as you like!
You need to search for files using LW & select them from the search results to start downlding them. They won't magically appear there by themselves. Perhaps you should view the manual:
http://www.limewire.com/english/content/userguide.shtml
Am I missing something here? I think you've missed some of my instructions. If you want to share what's in your folder called Shared (which is where you downld to), then add that to your folders to share. If you want to add more files to share then have a folder of files you wish to share & add it to the sharing folders list. The other way to add folders is to go to your LW menu Tools>Options>Sharing & press the Add button & direct LW to where the folder is you want to share.