There used to be an open-source version of this called Echoprint which was shuttered after the company was bought by Spotify in 2012. Much the same technologie

There used to be an open-source version of this called Echoprint which was shuttered after the company was bought by Spotify in 2012. Much the same technologies though and an interesting research project: https://www.echoprint.me/ https://www.echoprint.me/