Feature request: External volume control

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Short description: I want to be able to control the volume of my amplifier from 
LMS, without changing the output of the squeezelite player.

I have a DAC connected to a raspberry pi, running the squeezelite player. At 
the moment, I can change the volume of the player, by changing the volume in 
the DAC. The problem is, that by doing it this way, I'm not using the full 
resolution of the DAC.
Instead I want to export the volumelevel from squeezelite, and use it to 
control the analog volume of my amplifier.
Is it possible in any way, to do this?

/Jonas

Original issue reported on code.google.com by [email protected] on 6 Jan 2015 at 10:59