ZVolume Pro is a nice, powerful replacement to the standard Windows Volume Control.
It can be vastly customized, including changing its look using skins. ZVolume Pro supports hotkeys and command-line parameters as well as all other functions the standard Windows Volume Control supports.
ZVolume Pro is a nice alternative to the original volume control for your system. The program takes the form of a tiny toolbar - as small as 64x14 pixels. Use your mouse to adjust the volume or take advantage of its extensive hotkey support.
Besides allowing you to use your keyboard to adjust your sound card's output, ZVolume Pro can control Winamp, Sonique, the NAD MP3 Player, WPlay (Pro), the Windows CD Player and Microsoft's Internet Explorer 4.0/5.0. You can mute your sound with a quick double click on the ZVolume Pro system tray icon and just as easily configure many aspects of the program to suit your needs to a tee.