amarok plays songs of audio cd one by one

Running Kubuntu 12.04.1 and Amarok 2.5.0, songs from the audio cd are recognized and I am allowed to add them to the playlist. However, you have to click them one by one to play them. When one song is being played, Amarok only allows you to go backwards to the previous song but not to the next one.

It seems songs from audio cd are not correctly added to the database. It is not an audio cd issue, Vlc has no problem to go back and forward through the playlist and to play all of them. I also changed sound to vlc backend instead of gstreamer.

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: amarok 2:2.5.0-0ubuntu6
ProcVersionSignature: Ubuntu 3.2.0-34.53-generic-pae 3.2.33
Uname: Linux 3.2.0-34-generic-pae i686
ApportVersion: 2.0.1-0ubuntu15
Architecture: i386
Date: Thu Dec 6 01:55:29 2012
InstallationMedia: Kubuntu 12.04 LTS "Precise Pangolin" - Release i386 (20120423)
MarkForUpload: True
ProcEnviron:
 LANGUAGE=en_US:en
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: amarok
UpgradeStatus: No upgrade log present (probably fresh install)