Quick Summary
Audio Cu is essentially powerline networking for your surround sound speakers.
It's currently US-only and the equipment is rather expensive, but it could be the ideal answer if you want to run up to Dolby Atmos audio over a larger distance.
One of the big irritations with surround sound, such as Dolby Atmos, is running all the speaker wires. Even in a standard room that's a lot of speakers to connect, while in a more unusual layout, it can be a real pain.
