Personally I would never install a filesharing app, with shares, on a work laptop for multiple reasons, but since this is what you like doing, then you should definitely familiarize yourself with all the options in Limewire.

In your case specifically all options pertaining to what files other may have access to. Pay special attention to if you are sharing a folder, with any subfolders, that you aren't planning on sharing. or even make a separate partition for Limewire files (downloaded ones, incompletes and personal shares).