Mute on Lock is a lightweight application for Windows that is designed to automatically mute the sound of your speakers when you lock your Windows.
This utility is useful especially to those who always leave their music player, instant messenger or notifications on, while away from the computer. Other peoples can easily get disturbed and get annoyed with all sort of sounds, coming out from the computer.
This small utility sits on the system tray to monitor your session. Whenever you lock your Windows, your speakers will be set to mute.
Moreover, you can quickly mute or unmute your computer’s system sound by simply double-clicking the tray icon or you can set a hotkey for muting and unmuting the system sound. To set the hotkey, right click the tray icon and select Options.
Mute on Lock is free for download and is compatible with Windows XP, 2003, Vista, 2008 and 7.