more color: http://www.fastcompany.com/1751222/echo-nest-rdio-partner-for-next-gen-music-apps http://www.fastcompany.com/1751222/echo-nest-rdio-partner-fo...

more color: http://www.fastcompany.com/1751222/echo-nest-rdio-partner-for-next-gen-music-apps http://www.fastcompany.com/1751222/echo-nest-rdio-partner-fo... http://mashable.com/2011/05/03/rdio-echo-nest/ http://mashable.com/2011/05/03/rdio-echo-nest/ and the lovely http://musicmaze.fm/ http://musicmaze.fm/ what this means -- using EN APIs like recommendation, playlisting, search, fingerprinting, whatever, you can resolve against Rdio track IDs and then play them with their player. If the user is logged in you get full streams, if not, you get 30s samples.