Hardware projects related to the Logitech (previously Slim Devices) Squeezebox

I'm an enthusiastic user of the streaming audio products sold by Logitech. I have a Squeezebox version 2, a Transporter, a Squeezebox Receiver, and a couple of Squeezebox Controllers. On these pages I describe a couple of hardware projects I've built. Both are designed to get the ancilliary amplifier to turn on/off together with the Squeezebox.

Power Switching from a Squeezebox Classic or Transporter
Power Switching from a Squeezebox Receiver

Note: I know nothing about the Squeezebox Boom.