In which he "redirects stdout" to the audio driver (as I understand it) and effectively streams PCM audio data to his speakers. He addresses how he does this in the video's description, but it's a little vague for an inexperienced, non-linux user such as myself.
I had a look and freopen (http://www.cplusplus.com/reference/cstdio/freopen/) strikes me as promising. I guess my question is does anyone have experience doing this kind of stuff (streaming PCM audio data, without the help of some extensive API)? Any pointers to set me in the right direction are greatly appreciated.
Thanks Duoas! You've set me in the right direction.
@andywestken after looking, Bisqwit actually has an example using cygwin for this kind of thing. I feel a little silly now :).
I guess that's the way I'm gonna go, thanks again for the feedback!