Would you mind commenting on which open-source algorithms you are using in your updated codebase? I'm very interested in hacking on a similar project, but I'd l

Would you mind commenting on which open-source algorithms you are using in your updated codebase? I'm very interested in hacking on a similar project, but I'd like to avoid using the Echo Nest if possible. Huge fan of your work! (Forever.fm, in particular, is an inspiration for me)