Export audio from video files, even en masse, with Audio Extractor for Free
Audio Extractor for Free will extract the audio part (soundtrack) of a video file and save it as MP3, WAV, OGG and other audio formats.
Audio Extractor for Free supports batch conversion. The interface is simple and easy to use. You can set bit rate and sample rate as well as volume level and channel. A preview window will let you define the part you need to extract by using slider or by setting the start/end time.
You can also convert audio files from one format to another directly without any temporary files (e.g. WAV to MP3, MP3 to OGG, etc. Batch conversion & multi-core CPU support will give you high conversion speed. Support of MP3, WMA, WAV, OGG, AAC, M4A, FLAC, AC3, RA, AU & MP2 formats. Any length of audio can be extracted from a video file. Just specify the start & end time you want to extract and then check the “Cut clip”.
I found Audio Extractor for Free a surprisingly fast application, extracting the sound of a whole movie in WAV format in a couple of minutes (quad core cpu).