No analogue sound using Libreoffice impress

[comedix]

I am having this issue:
Raspberry pi 3B+ connected through hdmi to screen. I want to have the sound through the analoge minijack.

Using commando:

amixer cset numid=3 1

I can force the audio running through the minijack 3,5 mm.
This workds fine with eg youtube in chrome
However, when I try to play a audio file in Libre Office Impress, the sound is always coming thorugh hdmi , which I don't want.

So how can I force the audio through the analogue minijack using Libreoffice?

[klricks]

I am having this issue:
Raspberry pi 3B+ connected through hdmi to screen. I want to have the sound through the analoge minijack.

Using commando:

amixer cset numid=3 1

I can force the audio running through the minijack 3,5 mm.
This workds fine with eg youtube in chrome
However, when I try to play a audio file in Libre Office Impress, the sound is always coming thorugh hdmi , which I don't want.

So how can I force the audio through the analogue minijack using Libreoffice?

I have no problem switching from HDMI to analog using the GUI tool (right click on speaker icon).
BT is a bit quirky however. To use a BT speaker I have to select the BT device before starting LibreOffice Impress.