Koala Audio Converter is a powerful software for converting, extracting and compressing audio files. It realizes conversion among modern audio formats including MP3, WAV, WMA, CD, AC3, OGG, AAC, MP2, FLAC, RM, RA, AMR, AIFF, MMF, etc. It can extract audio files from almost all video files such as RM, RMVB, VOB, DAT, VCD, SVCD, DVD, ASF, WMV, MP4, 3GP, MOV, QT, MPEG, DivX, XviD, AVI, 3GPP2, DV etc. And the files after conversion can be saved as modern audio formats. (e.g. MP3, WAV, WMA, CD Track, AC3, OGG, AAC, MP2, FLAC, RM, RA, AMR, AIFF, MMF). It supports converting ringing tone formats including AMR_NB, AMR_WB and MMF. You can adjust the volume size, lower it or raise it. The software uses the most advanced coding and decoding technology, it has very fast conversion speed and excellent conversion quality. And the software interface is very beautiful (You can change the software skin).Operation is extremely simple. Support batch conversion for a large number of audio files. It saves you a lot of valuable time. It supports automatically shutdown computer function after conversion. Key Features 1. It uses advanced coding and decoding technology. The software has fast conversion speed and high quality of conversion. 2. Supports batch conversion of a large number of audio files, providing automatically shutdown function after conversion. 3. You can raise or lower the volume size of video files. 4. Supports extraction from a variety of video files, separated voice can be saved as MP3, WAV, WMA, AC3, OGG, AAC, MP2, FLAC, RM, RA, AMR, AIFF, MMF and other audio formats. 5. To support any interception, split from audio files, and it has high precision. 6. Quality of Converted audio files can arbitrarily be adjusted (you can modify the resolution, bit rate, frame rate, sample rate, channel, etc.). 7. Supports Ringtones format conversion including AMR_NB, AMR_WB and MMF formats. 8. Supports batch conversion.