No Ainu recordings, but I do have some Koryak recordings that sound
somewhat similar to Inuit stuff, and I rather suspect the Ainu stuff is
akin to those. It would make sense given the geographic proximity, just
as geography and cultural exchange in the Turko-Mongol areas produces
related forms. If you ever track some down though let us know, I'd love
to hear them. I wouldn't be surprised to find out I'm completely and
utterly wrong.