Convert various Video files to Audio formats

very useful tools for you^
Shine Video To Audio Converter for Mac is an extremely and easy-to-use tool to extract audio from AVI, WMV, ASF, MPG/MPEG, MP4, MOV, 3GP files to MP3, WAV, AAC formats.
Convert files with High Quality & Fast Speed
Shine Video To Audio Converter for Mac supports fast batch conversion. You can once convert several sections of a video file. It supports rich options, allows you to generate audio files with different qualities and sizes. Shine Video Converter for Mac can automatically shut down your computer when the conversion is complete.

http://www.audiotoolsfactory.com/video-audio-mac.html

ppt to video converter
http://www.audiotoolsfactory.com/ppt-video.html