Comment 3 for bug 746896

I tried installing the freedesktop sound theme in the hope that the new theme installation will bring back the sound events.
But it did not. Could there be a change in some system settings?

I checked the folder /usr/share/sounds/ (where the freedesktop theme got installed). But I could not find the sound theme "Rajesh" I installed with Sound-Theme-Manager.
But I can still see the theme in the list of theme installed, in the Sound Effects tab in Sound Preferences dialog, and also in Sound-Theme-Manager. Has it been installed in a different location?

And also, the Ubuntu theme that is present in this location does not get listed in the list of theme installed.
Thought these info might help you in debugging.