I just downloaded the Alpha at the end of last week.   I am not a computer Wiz but I know that it will improve and be functional.   I am having all the problems that everyone else is having with indexing and slowness.   
My main question is can I download the program onto my PC without having to pay for it again?   I know multiple computers is not a problem but what about more than one computer with different OS?   
Also as i said i am not a wiz but can I get a parallel to run that is free?   Or would that be over my head.