i am using limewire on mac os9.2 and have upgraded most programs now so that all files will open but i am having a problem with .sit files. when i download a .sit program over 5 hours or however long it takes, it goes onto desktop but when i try to open/unstuff the file the only thing happening is that limewire opens. nothing else. why can't i open these files and why do they just act as limewire launch buttons instead ?