SFX Machine RT is a real-time version of the award-winning SFX Machine audio effects plug-in. It is now available in Audio Unit and VST formats for Mac OS X, and VST format for Windows. SFX Machine RT comes with hundreds of presets, including conventional effects like choruses and flangers as well as a wide variety of unique effects. Many of the presets include a pitch tracker or envelope follower, allowing the effect to respond intelligently to the input signal. The plug-in also allows automated parameter control via a simple "MIDI Learn" interface. A Randomize button makes it easy to get an idea of the range of possibilities contained within each preset. The plug-in is popular with composers and sound designers and has been used for radio production, TV shows, feature films, CDs and video games. Those who don't need its sound design capabilities often find it useful as a "swiss army knife" of audio utilities. The software is streamlined to be fast and easy to use in audio production environments. The SFX Machine Simulator, http://sfxmachine.com/simulator/ , is an online Flash program which provides a fun, interactive way to explore the capabilities of SFX Machine without having to download and install the demo.