Hey! Creator here. Awesome to see this get posted and people excited about the project.

I made a cool writeup about it here: http://willdrevo.com/fingerprinting-and-audio-recognition-wi...

It's a great little library for doing audio recognition, stream radio advertisement verification, and all sorts of interesting people email about all the time that I never would have thought of.

It's certainly not as speedy as Echoprint, which is both written in C++ and doesn't use an FFT for the locality sensitive hashing, but is quite user friendly. The benefit of doing constellation or time delta based LSH methods like in Dejavu is that you can actually recover the time at which you matched.

If you love it, feel free to dig in and contribute!