An user reported a crash with the Mac AppStore of the game when loading SamPatch 2013 and that the crash wasn't occurred on the demo version nor when he removed some grunt FX.
I looked all that in details and I found out the problematic .wav files are at 96000hz (normally, max should be 44100hz).
If you encounter such crash, you can take the old SDL_mixer.framework from the demo version and use it to replace the new SDL_mixer.framework in the AppStore version, then the game can load them. It's likely a bug in latest SDL mixer version. Unfortunately, older version contains PPC code and I think it's forbidden by Apple to publish such code on the AppStore.
I'm going to report the bug to the SDL team, but I don't think it'll be fixed (they already moved to a new & different edition of their system).To FX Modders:
please don't use .wav file with frequency above 44100hz ; it's totally unneeded, it wastes space for no perceptible quality gain, and it makes the Mac AppStore version of the game crash...