Have you already made your NAS accessible from outside your LAN? You're not going to be able to use the Palm Pre interface unti that's done(unless you can connect va wifi, in which case you us the internal IP of the nas). There's a bunch of steps that you have to go through on your router to make this possible. Going through a browser from outside your LAN you would go to [your external IP]:9090/gui . The /gui thing is only relevant on a web browser as it loads the web browser based interface. On a device that is running its own BitTorrent interface, like the app you've referenced, the app needs to access the IP and Port of the bittorrent client, so that is what you enter into the app. Now the application itself has to be coded to correctly interact with the utorrent web api and handle things like token auth too, but I have no way of testing that. If you can access externally on a computer, then you might also try the same address on the palm pre's browser to confirm it works, and then try out the app.