It’s not an issue per se it’s just a feature that’s never been allowed by any streaming service and any 3rd party. It’s part of their licensing deals with the labels they have to heavily encrypt the downloaded data in their own apps to allow it at all for them. Music industry is very paranoid of piracy. The music is licensed for only them to be able to access it in this way. Nothing Roon or anybody can do other than moan to them but it’s been like this for years can’t see it ever changing.