Mute on Lock is a tiny resident utility that sits in the system tray and monitors your session: when you are locking your Windows workstation, it mutes the sound of your speakers. With the help of this program you can quickly mute or unmute the system sound by double-clicking the tray icon or using an optional hot key.

Mute on Lock Key Features:
1. Supports all Windows NT operating systems with fast user switching, from Microsoft Windows XP up to Windows 7, including x64 editions.
2. An icon in the system tray area, which allows you to control various program settings.
3. You can set a hotkey for muting and unmuting the system sound.
4. You can mute/unmute sound by double-clicking the tray icon.
5. Automatically loading each time Windows starts.
6. The portable version of Mute on Lock is available.
7. The modest main memory and disk space usage.
8. The program is absolutely free!

The license of this software is Freeware, you can free download and free use this system locking software.