Setting Spotify proxy settings when logging in

My problem:

* Installed Spotify for the first time on work machine.
* Work has very restrictive default proxy, which bans Spotify.

Thankfully being a developer in IT we know of a few more leniant alternative proxies....

Further problem:

* When launching spotify you need to log in with no option of defining the proxy to be used.
* And the error message just say unable to log in.


Solution:

* Unplug the the network cable

This prompts an error message with allow you to change the proxy settings.
Remember to plug in your cable again!