I stumbled upon this article.
The reason for posting was this part:
There are so many embedding media such as soundcloud.com but in terms of browser recognizing it and playing it what is the interconnection of such audio to the browser?
The file is kept at the server(or downloaded from the server to the browser) and when we hit play it starts playing so it is the browser that is interpreting and then playing. If I want to know more about this what term should I search for?