[valdi74]

Thx, where can I change it? On Xbmc?

1. You can remove pulseaudio from system:

Code:

sudo apt-get remove pulseaudio

but sound in Ubuntu will be broken.

OR

2. You can kill pulseaudio before run XBMC. In standard instalation, pulseaudio server starts automatically after kill, so you have to disable it:
Edit pulse configuration file:

Code:

/etc/pulse/client.conf

and add (or uncomment and change to "no") following line:

Code:

autospawn = no

In your unity/gnome session go to startup programs and add new command:

Code:

pulseaudio --start

Before run XMBC, kill pulseaudio:

Code:

pulseaudio --kill

After exit from XMBC, run pulseaudio, to restore Ubuntu sounds:

Code:

pulseaudio --start