There you will see there are 3 types of HTTP streaming supported.
It's a very good idea to read through that guide and the entire User Guide when you're just starting out. It will save you a lot of time. Also, please try not to post the same question in different threads. It will only delay your answer as there's more for us to read. Thanks.
Flash has features like bi-directional communication which allow you to control things on a per client basis. But, the Cupertino implementation does not. If you wanted to switch all the users watching a stream from one language to the next while the video is playing, you might be able to work something using the stream class examples and a custom module.