[arch-general] MPD volume problems after update -> mpd 0.17-1

[Sébastien le Preste de Vauban]

if I attempt  to change the volume of the current song being played by 
mpd (tested with ncmpcpp and sonata), the volume gets muted, no sound 
can be heard. This did not happen with older version of mpd 0.16.x. I 
haven't touched my mpd.conf and mpd.log does not show anything suspicious.
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