How do I find source files for a specific sound...

Question

This problem has plagued me through many version of GB. Basically, my roommate creates the garageband files, selects the instruments etc. Invariably when he gives me a copy of the Garageband file GB seems to swap in the instruments for some other instrument without ever alerting me that it's doing it. Basically, nothing sounds the same. We've both done clean installs, installed the same Jampacks. it says the same instruments but sometimes it will swap an organ sound for a string or something not even close.
In Itunes, there's a way to (command-R I believe) find the source file - is there a way to do that in GB? My roommate's computer has an instrument called Piano and Strings - we can't find any file with that name and for some reason no matter what I do I can't access that sound. We're both on MacPros. Recently I alone upgraded to Snow Leopard, but this problem has gone on for years.
What I'd like to do is sort of block GB from swapping in instruments without notifying me, or allowing me to know what those missing sounds are and some way of finding them so a GB file will play roughly the same (obviously acoustics or speakers will differ).
thanks so much for any refs or suggestions.
enzosf

Answer 1

Tell him which instruments you have and limit him to those. Keep everything to a subset of instruments that you both have.
Are you adding to the tracks or just listening? If just listening he can just export to iTunes.