mad:
mad:  MAD is a high-quality MPEG audio decoder. It currently supports MPEG-1 and
mad:  the MPEG-2 extension to Lower Sampling Frequencies, as well as the
mad:  so-called MPEG 2.5 format. All three audio layers (Layer I, Layer II, and
mad:  Layer III a.k.a. MP3) are fully implemented.
mad:  MAD does not yet support MPEG-2 multichannel audio (although it should be
mad:  backward compatible with such streams) nor does it currently support AAC.
mad: