I suggest playlist-dependent playback order settings (of course I would be satisfied if someone could show me a plugin for that).

Reason: For example, I like to listen to my collection in random order, but I also have a playlist with new files which I like to listen to in the normal order so that I can listen to a whole album and then move the files to my collection. It’s a bit inconvenient to change the playback order everytime I switch the playlist (which I often do).

You can try foo_utils_playback.

Thanks! First I thought it wasn’t working, but a web search revealed that I have to stop playback first.

That's how the plugin works: The playback order settings remain global but the plugin remembers for each playlist its playbackorder and switches to it on playlist change. When starting playback the playback order of playing playlist is shown.

Does it have some additional functionality? Any documentation?

I'm curious as well... Sounds intriguing!

AFAICS the plugin doesn't work with autoplaylists. Does not keep the playback order state.