River Past Audio Converter is an easy-to-use, fast, and powerful audio conversion and extractor software.
It converts from audio and extract audio from video to WAV, MP3, WMA (Windows Media Audio), OGG Vorbis, or audio-only AVI files.
It can convert from Audible.com AA, Dolby Digital AC-3, AIFF/AIFC, AU, MP3, MPA, OGG Vorbis, RealAudio RA/RAM, SD2, SND, WAV and WMA. It can also extract audio from 3GPP/3GPP2, ASF, AVI, VCD DAT, DivX, DV, IVF, Matroska MKV, QuickTime MOV, MP4 (MPEG-4), MPG (MPEG-1 and MPEG-2), RealMedia RM, OGG Media OGM, DVD VOB, WMV and XviD.
For WAV/MP3/OGG output, you have the full control over the codec, sample rate, channel, bits per sample, and bitrate settings. For WMA output, you can choose from a list of Windows Media profiles. Easy to use batch processing. Extremely fast and reliable.
With the upcoming River Past MPEG-4 Booster Pack, you can convert audio to MP4 AAC audio.
No Adware or spyware. DX8 and Windows Media Format 9 runtime required. (download link available on web site).
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