AC-3 ACM Codec 1.0

I've finally added AC-3 encoding support by adapting the "ac3enc" code from the latest ffmpeg. There is a LOT of room for improvement in the future, so don't expect too much at this stage. (Right now I'm just happy when it doesn't crash...)

Program Information Category: Codec Type: Free Version: 1.0 Size: 57KB Works on: Windows Product page: here