Ответы:
Использовать AutoHotKey
SoundSet, NewSetting [, ComponentType, ControlType, DeviceNumber]
; BASIC EXAMPLES:
SoundSet, 50 ; Set the master volume to 50%
SoundSet +10 ; Increase master volume by 10%
SoundSet -10 ; Decrease master volume by 10%
SoundSet, 1, Microphone, mute ; mute the microphone
SoundSet, +1, , mute ; Toggle the master mute (set it to the opposite state)
SoundSet, +20, Master, bass ; Increase bass level by 20%.
if ErrorLevel
MsgBox, The BASS setting is not supported for MASTER.