More network affiliates across the U.S. are creating their own on-demand Roku channels, not live. CNN International has a live Roku channel. USTV Now provides East Coast network affiliates and cable networks live for a monthly fee intended for military Roku users overseas, and a free trial will last 30 days.
What if you installed a video capture card on a computer on your network and run a DLNA application to turn that computer into a server to stream the video capture card data, then use this Roku device to receive the streaming content on your network? Granted, the TV would have to be a Smart TV or use this device to pickup the streaming video. Would this work for local TV channels?