I want to know why the "popping" sounds were disabled, the ones that sound when I changed the volume, very Mac OSX like.
Is it possible to re-enable them? I'm using Ubuntu 11.10 and I loved those sounds by the way.
OK, it seems that in it's default configuration 11.10 with compiz doesn't ever play the system alert sound.
To fix this, open /etc/pulse/default.pa:
Around line 158, you should see a line that looks like:
Remove the leading "#" so that it reads:
Save that file, log out and back in, and you should have your alert sounds back.
P.S. Answer obtained from other site not particularly for this problem; however upon trying it out, it worked. Hope it helps you too.