@NEETzsche @lain @Moon easy. Audio document you as referring to in Listen activity isn't ingested and isn't stored. If I try to search for this document in database I wouldn't find it. When getting a Like we can query a document it is referring to, but why should Audio behave differently, what is so special about it, especially when we store Audio objects already? On the other hand if we are going to have distinction between "real" documents and "phantom" documents why should only Audio given a privilege, let's make it possible for people to like and reprööt posts nobody written.