Part of Retro AS-1 1.0. QuickTime movies can contain a variety of multimedia formats such as video, graphics, text, sound (digital audio files), and MIDI tracks. When a QuickTime movie contains MIDI tracks (called music tracks in QuickTime language), the wavetable-based software music synthesizer built in to QuickTime (the QuickTime Musical Instruments extension) will play the music tracks. The QuickTime architecture allows third-party developers to develop alternate software synthesizers for use by QuickTime that are activated by installing QuickTime drivers. Once the Retro AS-1 QuickTime Driver is properly installed, QuickTime can be configured to use the Retro AS-1 synthesizer engine to play music tracks instead of, or in conjunction with, QuickTime Musical Instruments.
