Just to add onto my previous madge theory,
http://www.discogs.com/Aileen-Stanle...elease/3600048 was released in 1922 (same time as the madge link above happened.)
http://www.loc.gov/jukebox/recordings/detail/id/4964/
Looks like here's the original file used on the TINP page (it was obviously cleaned up and modified in protools but you can tell this is the one.)
even if we aren't supposed to figure it out yet, gonna write it down so i dont forgot. just in case.
edit: hello orthodoc!
edit2: slightly interesting, there is also a tinp.mp3 off the main page (in addition to the .wav that plays). Kind of odd that there is a 192 kbps mp3 that does nothing, but there is a wav file that plays instead. Either the wav was lossy transcoded or the mp3 is there for some (or no) reason. probably meaningless.