Because I share almost everything on my pc, I am not aware of everything that I share. So many times I wonder what file someone is downloading from me (What I am uploading).

I suggest this feature for newer versions of Limewire:

A link that says: Open file location when you right click on a file that someone is downloading from you. (In your "Overview" tab)

I don't know why this function isn't already available :\
(I have Limewire 4.12.4)