We aren't even
sure the thing will do .txt files and you want it to talk to your (non-windows) Computer? You sure are asking for a lot.
Seriously, though, I don't think I've seen anything on this either. My guess is that since Sony is really unexcited about the prospect of non-Sony files being read on its device, they're not going to be interested in it connecting to something as alien as a MacPuter. After all, the 'puters they make are Windows machines, right? I suppose they figure they're being generous by allowing us to connect it to non-Sony 'puters at all.
Wait a minute, this thing will work with say a Dell or Compaq won't it, Sony? Hello?
I don't seriously doubt that it will, but, Sony being Sony, I do wonder. I wouldn't be surprised if there were at least
someone in Sony's organization that wanted to tie it to only Sony PC's.
And you might be able to put your own files on it just fine, if not from the USB then via a memory card, but I too am skeptical about anything more complicated than that working with a MacPuter.