[IDEA] equalise volume output from different 'sources'

[Nutul]

In the Gain and Normalization section of MPD Config there are some settings for ReplayGain and Volume normalization but I've never used or tested them.

There are no such options for radio stations but possibly some sort of of ALSA plugin could perform volume normalization on the PCM stream being output (this would also cover song files). Another possibility might be to use CamnillaDSP for this?

For the OP's issue I would definitely set the Amp volume down so that the loudest radio station does not affect the equipment and then I'd prolly change moOde Volume type to Hardware or Software and use moOde to remotely control volume. Something like that.

Could it be possible to add a parameter to the radio stations - defaulting to 0 of course - which would do the attenuation by a specified number of dBs when selected to play, and restore it when leaving the stream?