Software Volume Control question ..

[stopspinning]

Sorry newbie here.

If I am streaming music files from MinimServer to a UPnP renderer - can I control the volume of the music stream from MinimServer?

Reason I ask is that I rather like the sound quality from my Marantz NA7004 spdif out but it does not attenuate the volume at the digital level which is my goal (I have no remote on my amp).

I realise there may be some loss of quality when attenuating from the software but I would not be tapping the volume down too much.

Thanks.