• Multi-channel decoding of AC3 audio (can do full 5.1 decoding).
• Implemented as a core-audio component so it is available to both Quicktime and Core Audio components.
• Includes an AC3 importer so QuickTime can read .ac3 files directly.
• Includes a preferences file to enable or disable dobly surround encoding as well as dynamic range compression.

A52/AC-3 audio is a common format for audio from DVDs.