Im sorry if i sound stupid but where can i find the folder?

In my limewire folder i only have 3 sub folders
.Network Share --> Installer
lib --> leads to a lot of things like clink, commons-net, foxtrot, a limewire icon, system utilities etc..
root --> magnet 10 --> things like silent detect, options, canHandle.img, badge.img and a limewire gif

can you tell me whats the normal file extension? i never changed the settings of my limewire