Leap Free All to Mobile Ringtone Audio Converter is a powerful, easiest and fastest free Video to Audio and Audio to Audio converter application. It can free convert or extract MP3,AAC,AMR,M4A from videos as AVI,WMV,MPEG,MP4,ASF,VOB,3GP,iPhone,MOV,FLV.Also,it can free extract Audio track from MP3,AAC,AC3,AMR,M4A with high output quality. You can set the encoding parameters including audio sample ,channels, etc to get the best quality. Input formats: AVI,WMV,MPEG,MP4,ASF,VOB,3GP,iPhone,MOV,FLV; Input format: MP3,AAC,AC3,AMR,M4A; Output format:MP3,AAC,AMR,M4A; Convert with very high speed and quality. User-friendly interface makes the output super good. You can control the parameters such as audio sample ,channels etc.