@All_bonesJones @coolboymew That's a *much* different audio quality.

Just read http://tasvideos.org/5384S that's linked in the video description, they're streaming the audio data through the joypad (8-bit of input), meaning you'd need sampling rate of the inputs at least equivalent to the sampling rate of the audio chip, not detailed and not familiar with GBC hardware but 8kHz audio was pretty standard even all the way to the 80's.
So yeah, really big doubt on my part.