Actual Solution

• Power Mixer
  screenshot | size: 619 KB | price: $17.95 | date: 1/21/2005
  Advanced Windows audio mixer.
• Power Mixer for Vista
  screenshot | size: 1.2 MB | price: $17.95 | date: 10/28/2007
  Vista Volume Control replacement
• VolumeLock
  screenshot | size: 395 KB | price: $14.95 | date: 6/21/2005
  Prevent volume settings from being changed.
• VolumeLock for Vista
  screenshot | size: 455 KB | price: $14.95 | date: 10/15/2009
  Prevent volume settings from being changed.