rg3/youtube-dl — pull request #1283 by schmoofer (2013-08-20 15:45:39+00:00)
Title: Added ability to specify audio channels and sample rate

Added option to specify number of channels for audio extraction. Also added support for specifying sample rate as part of the "audio quality" parameter. Integers greater than 8000 will be interpreted as the sampling rate, thus 8000 is the minimal.