The haven't played it yet (nor do I have a native tablet [only an old ADB tablet that won't work throuhg the iMate]) but I suspect that the Ink sound is either a sound as you drag a stroke out (like a fountain pen over paper scratch) or a squeak sound when you press down to begin a selection, like on the Newton (you CAN still do that, can't you! I hope so.)

l AM Writing this with an lntuos 2 tablet From WacoM. So far as 1 can tell, there are two Sounds. One at pen down (longer) 2nd d little Chuff at pen UP.

(Back to keyboard...) Hey, I'm getting better; capitalization interpretation is still bad for me (I mostly block print, and I write "a"s like you see in Helvetica/Arial, not grade-school/AvantGarde). Wonder if my Palm/Graffiti training will conflict with relearning to write for real for this. That was supposed to say "and a little chuff"... though I guess the sound is more like a "whit" (if you remember that old system sound).

I also have very the UI sounds enabled and hear almost nothing. A little click from dropping a New folder in the trash or command-deleting a file (mentioned by others). A shutter/film-wind sound from command-shift-3, but that could perhaps be considered an application sound.