[DaveBlake]

Note to myself and any addon dev wanting to use the same location for artist art that folder name can be retrived using JSON API Settings.GetSettingValue

Code:

{"jsonrpc":"2.0","method":"Settings.GetSettingValue", "params":{"setting":"musiclibrary.artistsfolder"},"id":1}

The folder name for specifc artists is simply the name with reserved chars removed. However it also adds mbid chars if the artist name is not unique. I think some way for addons to get this from Kodi is needed too, but not sure the best approach.