Using Twonky on iphone over 3G?

Is it possible to set this up.  I have the plugplayer ios app.  Twonky works internally through it, but I can’t figure out how to connect externally.

It’s using port 9000 internally.  I did not open that port up on the router, so I’m assuming the WD software did that automatically.  But I have no idea how to connect.

Not likely, Twonky works over DLNA, which in turns works with devices under the same network.