I compiled libmad for sox. When I try to read an mp3 I get this message:
sox FAIL util: Unable to load MAD decoder library (libmad) function \"mad_stream_buffer\".<
I have put together the original SoX binary and libmad and libmp3lame from http://code.google.com/p/ossbuild/source/browse/trunk/Shared/Build/Windows/Win32/bin/
SoX binary for Win32 together with libmad and libmp3lame