Easy to use and fast batch audio conversion. Convert/transcode audio from MPEG, MP3, WMA, WAV, AIFF, Unix Audio, or extract audio from AVI, WMV, MPEG-1, or QuickTime videos, to MP3, WMA, WAV, or audio-only AVI format. Users can choose codec, sample rate, channel, and/or bitrate settings. Easy to use batch processing. Extremely fast and reliable. No Adware or spyware. Windows Media Format 9 runtime included. Now supports audio-only AVI output so you can use it with your favorate video editing or authoring software.