um .. sharp thinking ... but ... you are likely, as with any download of a programme off limewire, to get a version which may contain spyware or worse.
You will not be able to get updates, or technical support, and most importantly imho you will be avoiding paying a paltry sum towards the development of this fine application.
I personally have no problem atall in paying a few dollars ... Less than the price of a CD ..... in my country at any rate ...... for Limewire Pro
And I don't share pro versions btw