OS X Mavericks: Only switch off system sounds for Finder functions
If you are disturbed by the Mac system sounds such as emptying the trash, you can only switch them off in OS X Mavericks using the Finder functions. We'll show you how.
Only switch off system tones for Finder functions - how it works
- Click on the "Apple" icon in the top left. Select "System Settings".
- Select "Sound".
- Uncheck "Use UI sound effects".
Also read how to turn off the sound when you change the volume on your Mac.