We don't yet have a way for AI notetakers to join the Meetn room as another user, however many note taking programs have mobile apps that can listen to conversation in your nearby area. It may work for you as a workaround to simply place your phone nearby your speakers so it can hear both you and other people on Meetn.
This is a pretty highly requested feature though, we are working on it, so we are going bring it out as soon as we can!