I downloaded Limewire for OSX and what I got doesn't resemble what is in the instructions in ANY WAY!!!!!

What the instructions say:

Once the download is complete, you should have a file called "LimeWireMacOSX.sh" sitting on your desktop (or wherever your downloaded files end up).

What I get:

A "package" entitled Limewire. It just says limewire. It's a package with plenty of stuff inside of it; resource and such.

Not a thing about this in the installation instructions.

anybody want to clue me in on
A. why the instructions aren't clear
and

B. how the f@#$ I should install the friggin program.

Please let there be someone who can SIMPLIFY life a bit and tell me what to do here

a