I tried a few times ti find out where the sound i located that is played when the installer has successfully installed an application.
Today I finally found it.
The sound name is 'burn complete.aif'.
You can find it here: /System/Library/Components/CoreAudio.component/Contents/Resources/SystemSounds/system/burn complete.aif
I did not find this by myself.
I got the tip from here http://forums.macrumors.com/showthread.php?t=524273