autoplay video dvd ... where can I find the settings?

Hi all! I have upgraded an old installation to 14.0.5 + devuan ascii. If I recall correctly there should pop up a dialog when I insert a video dvd. Somehow this dialog is gone - mst likely the user selected the "never ask again"-checkmark on said dialog. But how do I get that dialog back? Or better, where does TDE save that setting? I'd like to start xine when a dvd is inserted. Nik -- Please do not email me anything that you are not comfortable also sharing with the NSA, CIA ...