i dont understand what exactly you mean.
The livestream is a broadcast recorded inside the event and broadcasted live over the internet to the regular Youtube, Twitch, Facebook, Twitter etcetera.
If you want to show a livestream inside altspacevr, you need to write a simple video player and host that inside your world.
Thanks for the answer. Yes, I mean that. I don't have the knowledge to write a video player. Maybe is the chunk of code already in Altspace? Like module/addon/plugin? Or not? As I said I don't have any experience with that ...