I’ve not been able to change the volume when DPSReflector is selected in Sound preferences, although the on-screen display shows that the volume level is supposedly changing. Mute is checked in the volume slider in Sound preferences. Turning DPS on or off doesn’t affect the volume slider at all. I can manually change the volume with the slider though.
I’ve uninstalled and reinstalled DPS 1.0.7 a couple of times now, and I’m still unable to change the volume. I’ve also gone through the Setup Helper, which tells me to do what I’ve already done.