Well there was a plugin format that supported this feature. I’m not really sure how much I’m allowed to tell about that so I will not mention any names Anyway, that plugin format is obsolete now. Even in Celemony Melodyne you’ve got to select a path to store your files in. Melodyne is kind of managing the files, but there are circumstances under which files that are not used any longer are not deleted. If a plugin is removed from an insert slot it cannot really tell why this happens. Is it moved from one insert slot to another (some DAW reinstantiate in such a case), is the plugin removed or is the session closing? Somehow this behavior seems to work for most Melodyne users, so I guess I’ll implement something similar. Maybe I’m going to save the path in a SharedResourcePointer, so you just have to set the path once in a session.