Download help

Okay Im not going to pretend I know what Im doing. I am probably the most eliterate person here.
So heres my dillema. I want to download Limewire. But when I do I get a shortcut on my desktop that says something like XcErt345. If I click that it turns into Limewirewin When I click that it tries to open tself iin bluetooth. I never had bluetooth so it naturally says "Bluetooth hardware cant be found" So now Im stumped. I just cant seem to download anything without it trying to open itself in bluetooth

Wait I figuered it out. It turns out I was downloading the windows versoin and I have a mac