how to enable sound

[abdelkader belahcene <abelahcene@gmail.com>]

Hi,
I am using squeeze
I tried to enable the login sound,
cnaberra is installed,
It is done (on the same machine !!)  in ubuntu without problem, but not on debian, I ot this  error :


canberra-gtk-play -f  t/usr/share/sounds/sabily/desktop-login.ogg
Failed to play sound: Sound disabled

I can hear the sound, and play different codecs ( avi, mp3 ....)


I tried   to activate ( I suppose it disable, although I can paly sound !!!!) the sound  from theme in gnome-preferences-sound, 
but it is grayed no possiblity to do it!!!

thanks for help