Here are two tricks you can use when adjusting the Volume on your Leopard Mac.

First, normally when you adjust the volume level it plays a sound at each new level. This can be annoying if you are in the office, a coffee shop, or some other public place. But if you hold down the Shift key while you are adjusting the volume, no sounds will be played as the volume is adjusted.

Second, if you hold down the Shift and Option keys at the same time when you are adjusting the volume, the volume adjustment will be done in finer steps so that you can get more accurate control of your volume.