Would it somehow be possible to get the address of a function, and call that function from another app by forcing it to call that numerical 'address'? That way you could make 2 apps with 2 different audio drivers, you then do 2 function calls from one app and you'll have 2 external apps playing back, and you'll notice the delay by recording the result.
Or is this evil voodoo? :P
Or is this evil voodoo? :P