Built in speakers not found...
I've restarted, and it's still the same.
How can I fix this?
Screenshot
http://img233.imageshack.us/img233/5075/screenshot20091111at158.png
http://img260.imageshack.us/img260/5572/screenshot20091111at201.png
(greyed out, as you can see)
1 more screenshot added
Macbook Pro 2.6GHz 15", Mac OS X (10.5.7)