Comments about ATON DLA4 4 Room Speaker Level Audio Router:
This is a unique product which allows you to get fully automated full house audio without multiple amps or custom installation. Once working, it is great.
However, getting it working is non-trivial. Although the product comes with an IR transmitter, bizarrely it does not include a built-in IR receiver. So, you have to buy a separate receiver and then install by cutting the off the connector to expose the bare wires. And, again oddly, this has to be a powered receiver of 12 volts rather than an emitter from another box.