The potential of this device is amazing, and my first project after getting to grips with the thing was to get it to stream around my house. After setting up Tvheadend backend, all that is needed really is fixing the IP address of the WeTek by going to System - OpenELEC- Connections, then click on the connection, then Edit and change IPv4 IP Address Method to manual. It can also be set to static in your router.
By this stage, you would know that the backend is working by being able to log in to it, and use it on localhost Tvheadend client.
Here is the magic of it all - on any device where Kodi is installed (PC, Raspberry Pi, or another WeTek or similar) on your local network, just enable 'Live TV' in your Kodi settings, and enable Tvheadend HTSP Client (the option to do this should pop up automatically on enabling Live TV), and change the 'Tvheadend hostname or IP address from 127.0.0.1 to whatever the IP address is set to on the backend machine. Of course by signing up to a dynamic DNS service and forwarding a couple of ports on your router to the backend, you could easily access your tuner on the go provided you have a connection that can handle it!