I installed Mageia 3 beta 4 x86_64 live KDE DVD via USB stick on an external USB disk.
I copied my MP3 music to the /home partition on this disk.
I start Amarok and it plays fine.
Then I start some kernel compilation activities via su in a shell.
When exiting from su, Amarok stops playing and the "progress bar" freezes.
Doing su again makes Amarok continue playing.
Amarok only plays when there is a root shell.
Who understands what is happening here?