A high quality MP3 encoder
winLAME is an easy to use encoder for many audio formats, e.g. MP3.
Media Foundation : Audio/Video Source, Transform and Sink.
Convert wave files to MP3 with ID3 tag editing.
C++ speaker layout-independent 3D positional audio library
The new, updated front-end for FLAC!
A Qt-based C++ library for audio decoding, encoding and conversion.