A52Codec is a CoreAudio component that can decode stereo and 5.1 surround sound from A52 and AC-3 audio. This type of audio is often found in DVD movies.
Note: This is distributed with Perian 1.0. If you have installed Perian 1.0, there is no need to download this update; you already have it.
PUDDINGBOWL I installed the XviD Codec Component 1.0 alpha, but no sound, and I still can't get audio after installing the A52. Any ideas? (Version 1.7.6)
RUMPLESTILTSKIN Without this codec, AC3 audio isn't playable in apps that rely upon QT. (Of course, VLC doesn't have an issue but that's because VLC is self-contained and has all of the requisite components and codecs built-in.)
This codec plus Perian plus Flip4Mac's free component let virtually everything play in your QT apps.