In the LW Library tab check your shared folder or the folders you are sharing, and see what they contain. Those are the only files LW shares besides the incomplete folder if you have that option selected.

If you see you see all the files on your computer are being shared within this folder. You can right mouse click the folder and left mouse click stop sharing.

You can then go to tools>options>sharing---- left mouse click add--- this will open a window where you can locate the folder you would like to share. Then all you need to do is left mouse click select. Then click apply then okay.