1)   Sound Volume ActiveX OCX SDK 2.25
SoundVolume is tiny control sound volume ActiveX control that support control Master Volume, Wave, CD Audio, Line In, Microphone, Phone Line, PC Speaker, SW Synth volume.

 2)   Volcon 1.1
Handy system tray application, that allows to control master volume by means of keyboard shortcuts. It provides the fastest and easiest way to control the volume of sounds.