well, I FINALLY got it work (and no pun was intended there)
however, the Garritan choral sounds as included with Finale are not as practical as I would have liked. for example, the tenor "ahh" sounds cut off at a high F, which is MUCH too soon for any choral tenor section. if teh high A above that had been the cut-off, I might have understood, but F is a baritone note.
<sigh> there goes my dream of a decent demo of my missa brevis.
I have to say that I find the KP2 MUCH more complicated to get a grip on than the KP1. It might perform better, but it REALLY needs some sort of easy step-by-step user's manual for "getting you started". there are an awful lot of knobs and things that are all Greek to me.
at least I can get Finale to play back my 2nd symphony now, which Fin'07 could not.
well, more later as I explore.