libmad: libmad (high-quality MPEG audio library) libmad: libmad: MAD (libmad) is a high-quality MPEG audio decoder. It currently libmad: supports MPEG-1 and the MPEG-2 extension to Lower Sampling libmad: Frequencies, as well as the so-called MPEG 2.5 format. All three libmad: audio layers (Layer I, Layer II, and Layer III a.k.a. MP3) are libmad: fully implemented. Because MAD provides full 24-bit PCM output, libmad: applications using MAD are able to produce high quality audio. libmad: MAD is distributed under the terms of the GPL. libmad: libmad: MAD (libmad) was written by Robert Leslie.