[mdr268]

Per chi avesse problemi come il mio sull'avvio ho trovato questo..
http://imax.wordpress.com/2007/02/27...o-predefinito/

per installare i codec audio ho aggiunto queste righe

deb http://it.archive.ubuntu.com/ubuntu/ gutsy main universe restricted multiverse
deb-src http://it.archive.ubuntu.com/ubuntu/ gutsy main universe restricted multiverse

deb http://security.ubuntu.com/ubuntu gutsy-security main universe restricted multiverse
deb-src http://security.ubuntu.com/ubuntu gutsy-security main universe restricted multiverse

deb http://it.archive.ubuntu.com/ubuntu/ gutsy-updates main universe restricted multiverse
deb-src http://it.archive.ubuntu.com/ubuntu/ gutsy-updates main universe restricted multiverse

al file
/etc/apt/sources.list