The sound system in Enigmo 2 uses a cross-platform audio technology called "OpenAL" to play sound effects. OpenAL is built in to Mac OS 10.4 and later, however, if you are using Mac OS 10.3 then you must manually download and install OpenAL on your system.

This link will take you to the OpenAL web site to download OpenAL for Mac OS X:

http://openal.org/openal_webstf/downloads/OpenAL_Installer_OSX.dmg