Using nginx's proxy_redirect when the response location's domain varies

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http://serverfault.com – I am making an web app using SoundCloud's API. Requesting an MP3 to stream involves two requests. I'll give an example. Firstly: http://api.soundcloud.com/tracks/59815100/stream This returns a 302 with a temporary link to the actual MP3 (which varies each time), for example: http://ec-media.soundcloud.com/xYZk0lr2TeQf.128.mp3?ff61182e3c2ecefa438c... The issue I had (HowTos)