Windows10 Pro 64 / 8GB RAM
I hope that playlist file "m3u" shall be saved without pressing any button automatically.
I use SMPlayer to listen to audio "mp3".
I use SMPlayer to watch video "mp4" too.
I doubleclick a SMPlayer shortcut icon to watch video.
So my video list is made in the default playlist.
You add a video, or delete a video in the default playlist.
The default playlist is updated and saved automatically when SMPlayer is ended.
You don't need to press "save" button.
But, the playlist file you made additionally ..... It is not updated automatically
when SMPlayer is ended.
You add a audio, or delete a audio in a additional playlist.
You need to press "save" button to update the playlist. It takes time.