Would it be possible for the WAV headers to include the device ID? Or even better, user customisable fields. At present they are not used to the extent that they could be.
As it a wet week, I've done some updates to my pages and manual - it's a collection of information from the forums which may be helpful to new/prospective AM users. If you see any errors, feel free to let me know. https://sites.google.com/view/audiomoth/home