Fun project. I tried encoding a short sample and the shareable m/#... URL plus WAV export makes it easy to reproduce and share specific payloads.

A feature that would make this even more useful as a debugging or teaching tool would be a decoder inspector: recovered bytes, framing errors, and maybe a small waterfall or discriminator view while decoding. For acoustic transfers especially, that would make it much easier to see whether a failure came from timing, levels, or just picking the wrong protocol.