ulaw

Press a WAV file onto a PNG that *looks* like a vinyl record and *is* the audio. The fine groove texture in the image is the actual sample data: every audio sample owns exactly one pixel along an Archimedean spiral, with its brightness encoding the μ-law amplitude. Send someone the PNG and they can play it or scratch it on the virtual turntable.

An extension of cpython's wave.py module supporting CCITT G.711 ulaw, alaw.