NewAC
Short feature description:
* Audio recording and playback (in background mode).
* CD-ripping
* Supported formats: wav, Ogg Vorbis, FLAC, Monkey Audio, WavPack, MP3, Windows WMA
* Sound mixing, concatenation, cutting and insertion of audio fragments.
* Sound resampling
* License: NewAC is free for both open source and commercial use
http://symmetrica.net/newac/