This is some sort of part 2 of the Audio Chat app I posted a while ago. I have now added the ability to broadcast audio and video for a - in theory - unlimited number of users.
I am sure there are still some bugs and/or usability issues but here it is anyway, ready for testing. I would have posted this a lot sooner but recent weeks have been manic, with several hours each day just answering emails.
Any feedback on the app is appreciated.