Just to add some additional context to Akbar's post, our users would rarely get this error in the past. If they did, they could simply close all their browser windows and it would reset itself when the stream was reconnected.
In the past couple days, multiple users have reported this "streamIdInUse" error and restarting their browser (and even their phone!) would not resolve the issue.
Resorting to a hard deletion of the zombie prodcast is a temporary band-aid but obviously not a long-term solution
Thanks
Joe