From Music Hack Day
High precision waveforms as data API
 About the hack
Wrote a ultra hacky mashup API that serves waveforms as amplitude points on JSON array. The interface is the following: curl http://localhost:3000/a/293493.json?precision=2000
 What APIs, tools or kit did you use?
ibsndfile, SoundCloud API, Node JS, curl, sox, HTML5 Audio