Just an overview of the steps and locations:
The Pyechonest Package (there are other libraries like for Java, iOS, PHP, C++)
Can install from command line with:
easy_install -U pyechonest
Original package recommendation was to install Remix via:
sudo pip install remix
But that didn’t work for me (two times), using easy_install did:
easy_install -U remix
Numpy is also a dependency!
And the docs.