Nice, thanks for all the handy tips everyone, some combination of those should lead to success...
creature: That Furby's sounding good, my most recent one hardly makes any recognisable furby noises at all, just gibbers and sprays madness all over the place, sometimes it sings a lullaby though. Need to add a line out so I can put up a recording.
Two more Furby's on the way for the patch bay project and, something else, not sure what I'll do with the second one - probably hide it from my girlfriend and pretend I never bought it