Quite behind on my listening, so I didn't even think to check for comments until I caught the community news show just now (just caught up to my episode last night). Frankly, I'm way over my head. My very limited understanding of the fingerprint is that it's just a timestamped list of transitions between sounds. I don't know nearly enough about signal processing generally, nor about how Echoprint encodes those transitions specifically, to even speculate how one would begin to distinguish between music and speech.