https://free-mp3-cutter.en.softonic.com/

mp3 OR mp4 OR avi OR wma OR asf OR avi OR flv OR m2v OR mkv OR mp4 OR mpeg OR mpg OR nsv OR swf OR webm OR wmv

1. http://www.copytrans.net/ - CopyTrans Manager설치 2. mp3 -> m4r 변환후 넣기(카카오인코더)