title: How to install package in anaconda?
body: <p>I want to add music package to anaconda interpreter.
  I'm using ubuntu 14.04 64bit.
  I downloaded music21-1.9.3.tar.gz from anaconda cloud. 
  I unpacked it to anaconda3/pkgs</p>
  
  <pre><code>ext                installer.py  music21           PKG-INFO   setup.cfg
  installer.command  MANIFEST.in   music21.egg-info  README.md  setup.py
  </code></pre>
  
  <p>I found nothing on the web, or doesn't work. How can I install it? </p>