iTunesVolume is an iTunes controller for mouse that floats on your desktop.
This is NOT a software for volume adjustment.
From Slider you not only control the volume in iTunes, but can also launch iTunes, start and stop songs.
Drag Slider Knob: Play / pause, next / previous, volume adjustment.
Control-click Slider: Show the context menu.
(...or hold button press on Slider)
Command-drag Slider: Move Slider Position.
Double click Slider: Open / close iTunes Window.
Some windows will appear when cursor touches Slider.When you want to click them, touch Slider and move cursor to the window pressing control key.
You can open the preferences window or quit this application by using the context menu of Slider.
You can use even CoverSutra skin files. Copy the .coversutraSkin file into:
~/Library/Application Support/iTunesVolume/Artwork Appearances
You will be able to see and use it on the Artwork preferences.