Slideshow of videos - videos without sound [Fixed]

[masterjp]

I have some mp4 video files (h264 video with AAC audio) and used the slideshow function.
The video playback works, but without sound.
If I open the videos files for playback in xnview grid view browser mode,
everything will be fine and I hear sound.

[xnview]

there is a setting to play video without sound

[masterjp]

Thank you! Now I can enable or disable sound.