Program4Pc Audio Converter is a versatile audio converter and audio extractor with user-friendly interface and powerful functions. It converts audio between MP3, WMA, WAV, M4A, RA, WMA, FLAC, etc. Extract audio from all popular video formats and convert them to any audio format you like including all popular music player devices. Customize audio codec, sample rate, bit rate and channel. Trim and merge audio files professionally.