Volumouse is a is a useful, small and free utility that lets you adjust the speaker volume using the mouse wheel. To preserve the core functions of the components of the mouse,Volumouse, has support for creating keyboard shortcuts so that your mouse will function as usual.
For example, the volume would be adjusted only when you press an extra key on the keyboard and move the mouse wheel. You can also configure it so that the volume is changed when moving the mouse wheel on the taskbar, that option seems to me better.
* Windows operating system: Windows 98, Windows ME, Windows NT, Windows 2000, Windows XP, Windows Server 2003, or Windows Vista. (Windows 95 is not supported)
* Wheel mouse
* Sound card.
Link: Download Volumouse