I am a moderator in a relatively small community (details below) and one of our users is simply being annoying to other users, but does not actually break any rules. The said user has been reported by the community multiple times. We see how the user is annoying, but we don't have evidence that he is breaking any rules, so technically we can't punish him.
How should we handle such a user?
I'm a moderator in a room on a site where you can play any video from Youtube (within the site ToS and room rules) while chatting. The user is playing videos that are obviously disliked by most of the room, but since we have way too many AFK users that run autovoting scripts at that time, we can't skip the user based on the like:dislike ratio. Examples of videos he plays are speedcore music, scare videos and similar. Arguing with the user yields no results.