Here’s how to save the current playlist from a script - the file format will be determined by the extension, so this method works for .mlp, .m3u etc.:
begin
CurrentPlaylist.SaveToFile('c:\something.mlp');
end.Open and Save button: There’s an option for that on the “GUI” page in the configuration.
Export as CSV from a script: Looking at the code, I’d say it’s almost impossible at the time being, but perhaps I can tweak something.