title: Song research with Echo Nest Api
body: <p>I'm using the Echo Nest API to obtain playlist based on similarity. In particular I'm using jEN that is an open source Java client library for the API. </p>
  
  <p>I was wondering if with this functions I could get also the url of the related mp3. If not, do exist other apis that permits to obtain the audio of a song?</p>
  
  <p>I'm referring to the jEN library <a href="http://developer.echonest.com/downloads" rel="nofollow">here</a>. </p>