I use Android 5.1 on a Moto 2G. Recordings made in TMSoft's White Noise app are currently saved as WNA-files. However, in an older version of the app, they were WND-files. I have lost the older version of the app, but have very important older recordings as WND-files from it that I would like to open. But they can't be opened with the current app. Nor can they be opened on a pc with Windows btw. Is there any way to open them?