Sharing through Dropbox is what is most used on these forums.
Making artificial intelligence is hard, very hard.
You have to tell the computer what to do in every situation.
If this move is possible do it, if not see if this is possible, if not try this, etcetera. You will have to decide which moves are preferred. In men's morris it is pretty clear that creating a line of three, or preventing the other player to do so are the best moves if possible.
you should also try to randomize the AI movements a bit to not always play the same.
Why do you not have another choice?