Add line for multiverse to /etc/apt/sources.list deb http://de.archive.ubuntu.com/ubuntu/ dapper universe multiverse
I found usefull info on http://wiki.ubuntuusers.de/Codecs Now my sound with Amarok&Co works fine. -- Dapper: Sound doesn't work properly https://launchpad.net/bugs/35460 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs