After holding several break out room meetings now and digging into this sound issue it appears that the speakers are muted for Meeting organizers or people assigned as admins. Every time you join a room you have this condition where the speakers are muted. I organized a meeting and added three other admins to help run rooms. They had the freedom to move from room to room so they also had the opportunity to experience the speakers being on mute. However any person assigned to a room did not have the issue with the speakers being muted.
Seems like this only affects those who organize the meeting or added as admins.