To enable startup sound
* Click control gear and then click on Startup Applications
* In the Startup Application Preferences window, click Add to add an entry
* Then fill the information in comment boxes like Name, Command, and Comment
/usr/bin/canberra-gtk-play—id= "desktop-login"—description= "play login sound"
* Logout and then login once you are done
You can also open it with shortcut key Ctrl+Alt+T.
