With version 4 of MetaSynth, Eric Wenger’s electronic music and sound design laboratory for the Macintosh has been re-written for OS X and its capabilities have been vastly expanded. MetaSynth 4 has a new sleek user-interface and introduces new realtime capabilities, 16-track integrated mixing room, full-fidelity stereo realtime previews, capture-to-disk, multi-oscillator and FM synthesizers, new granular synthesizer, stereo Image Filter, spectral granular synthesis and much much more. MetaSynth now supports sample rates up to 96 kHz. MetaSynth 4 is a 16-bit application while MetaSynth 4 Pro creates 24-bit audio. The new detailed tutorials provide guidance that will help novices and experts master MetaSynth’s unique approach to music and sound creation. So much has changed that the software jumped directly to version 4 from version 2.7.