MiniBAE is a mobile sample-based audio engine developed by Beatnik, Inc. from 1991 to 2001, succeeded by MobileBAE.
Until 1997, it was called SoundMusicSys, appearing in many successful video games for Mac OS. 
Since the shutdown of Beatnik, Inc. in 2009, the source code has been released under a BSD license. 
The soundbanks are in a proprietary '.hsb' (Headspace Sound Bank) format.
The engine is most notable for being used in Nokia phones made from 2002 to 2009.