A library that merges streams of audio&video.
You can intergate this library into your stream server to do audio&video stream merging. This library uses fdk-aac(version 0.1.4) to encode/decode pcm data to/from aac format.
The audio mix-down module uses an algorithm, called Logarithmic Dynamic Range Compression(LDRC). You can find it here http://www.voegler.eu/pub/audio/digital-audio-mixing-and-normalization.html.