Comment 95 for bug 437429

Successful login sound (Ubuntu theme) can be disabled (on Maverick 10.10) via:
rename desktop-login.ogg (/usr/share/sounds/ubuntu/stereo) to desktop-login.ogg_bak
for the drums
rename system-ready.ogg to system-ready.ogg_bak

It's a regression & should be fixed - the GUI methods do not work.
IMO these sounds should simply be *disabled* by default. Leaving them enabled is both irritating and seems to try to replicate (and aggrivate users) Windows with these silly startup & login/logout sounds. Nothing more embarassing than firing up your laptop in a college class, business meeting, etc., with sound way up and having everyone turn around and look at you while Ubuntu runs through it's silly drum roll & login theme. As mentioned in #87, perhaps I'll just replace with the Windows sounds instead... at least that way I can claim that I'm a poor Windows user that doesn't know how to turn off these sounds on my Windows OS.