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Strange, try to exit and re-enter (duh).

Once you are in a room you can navigate to other rooms using the portals that you find in the virtual environment.
The main talks are in the mainstage room:

Screen Shot 2020-12-18 at 2.31.38 PM.png

yeah i can move around no worries but there is no tone of the speeches which is the issue, i can hear other noises though but no worries :-)