title: Music analysis software
body: <p>Greetings</p>
  
  <p>I may have imagined this but does anyone know if Last.fm previously used some form of open source project to perform analysis on music to determine similar music. </p>
  
  <p>As its now moved to a pay version I'd like to make something which can add known music to my playlist. (I hate scanning my computer for similar music manually) </p>
  
  <p>Failing that - does anyone know of any system that I could use to replace this ? Ideally I'd like some form of API / Source code that I can use to automate the whole process into batch jobs. </p>
  
  <p>Thanks,</p>
  
  <p>[edit]
  Ideally I was looking for something more along the lines of content matching. I'm the type of person who just throws all my music into one unorganized location. Then being lazy I would ideally expect a playlist to be generated giving me a similar music type of playlist. </p>
  
  <p>Last.fm uses <a href="http://www.audioscrobbler.net/" rel="nofollow noreferrer">http://www.audioscrobbler.net/</a> - it also provides access to its database via an API. </p>
  
  <p>[/edit]</p>