Both the Spotify and the developer community were absolutely delirious when the news about libspotify, Spotify API, were released on Tuesday evening. At first. 
“The libspotify C API package allows third party developers to write applications that utilize the Spotify music streaming service. Hopefully, this will enable and inspire you to build some really cool stuff. We’re looking forward to seeing what you can come up with.“ So far so good.

Then they read the Terms of Service and were not quite as happy.

• “Approved Device” does not include any mobile wireless handset or any other internet-enabled device that is designed to be handheld.”

• “The Application Key must be embedded in your Application, including in all updates and revisions thereto, in a secure manner not accessible by third parties.”

• “Spotify reserves the right in its sole discretion to revoke your Application Key for any reason or no reason, without notice, and to block access to the API and Service by the Application, without any liability to you or your users.”

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