OK, yet another device I need to control my audio. As I'm still awaiting info for my jack plugin, I'll work on turning my amp on and off. I have a solid state relay to power the amp on and off with. I need to set DTR high on the serial port to activate the relay and low to deactivate. Can this be done with the GSD plugin? If so how? Otherwise I have C code to do it, but until I can get DCEGen to generate code that compiles, it'll be a while till this plugin exists.