Reverse-engineering my speakers' API to get reasonable volume control

Wow, I never thought speakers would connect to the network, let alone be running Linux and a webserver for a hidden interface. Honestly, I thought speakers still weren't any more complicated than "convert this digital signal into a signal playable by the driver" with a volume knob.

The digital to analog conversion is even complicated for a speaker. They just take the analog signal. It's really just an electromagnet that moves a cone that vibrates and pushes air around.