SoundCloud Api redirect confusion and Audio Api Streams

Question

I am attempting to make a request to the SoundCloud API. Then when I get the response I set the stream_url as the source of an < audio > element.

This works:

Answer 1

When you run the request for

 https://api.soundcloud.com/tracks/140326936/stream?client_id=5c6ceaa17461a1c79d503b345a26a54e

you get a HTTP 302 Found response from the server, which is a URL redirect (http://en.wikipedia.org/wiki/HTTP_302). This will cause your browser to load from the new URL that the server returns, and thus the two requests you see. The server basically says "yeah, I know where to find that file, ask that guy over there".

The reason why one works and the other not, I'd think, is that https://ec-media.sndcdn.com has the Access-Control headers set while https://cf-media.sndcdn.com doesn't. This is an issue with the server configuration and unfortunately nothing you can control from the client side. Dunno if it's a deliberate move by soundcloud or if it's something you could ask them about.