1.extract sound tracks from VIDEO and save them as MP3 format. 2.The format of Video file can be avi , mpeg , asf , wmv , RM ,RMVB. 3.Allow for changing the Bit Rate and the Sample Rate of the MP3 Convert Avi to mp3,Asf to mp3,Wmv to mp3,Mpeg to mp3,Mpg to mp3,Rm to mp3,RMVB to mp3 all in one software 4.use LAME as default MP3 encode engine.So it can provide high quality of the Mp3 file! 5.Only $25