SleepMute automatically mutes & unmutes sound. Don't let your computer disrupt a quiet shared space with unwanted alert sounds at all hours of the night, let SleepMute keep the peace!

Features:
- Mute and unmute when the screen saver starts, display sleeps, computer sleeps, or computer restart, shutdown, & logoff.
- Fade sound in or out over 1 - 5 seconds.
- Mute or unmute immediately instead of fading.
- Privacy. Stop prying eyes and ears from knowing what you're watching using a Mac OS X hot corner to sleep the display and mute sound.

COMPATIBILITY NOTE: Currently only supports muting startup sound on built-in speakers, not externals.