Originally Posted by elishac
Where can I find this then ?
I'm very sorry, but I made a mistake in my last post.
I meant to say, go to: system > preferences > startup applications
. Then uncheck the box next to gnome login sound. The sound should be gone the next time you login to Ubuntu.
Sorry for the inconvenience. Please post back if this helps, or if you need more help.
What Brains posted above should be helpful to you also. You can change many sounds from: system > preferences > sound. I no longer have this, since I removed pulse audio.
I have edited my last post to correct this for the benefit of others who may look at this thread.