Bigasoft Audio Converter
is a software that can convert audio files into multiple formats including MP3, WMA, M4A, AAC, AC3, WAV, OGG, etc.. Via its interface, it allows you to convert one or several audio files at once using your own settings. If you wish, you can even convert only a portion of your favorite song into a ringtone for your cell phone for example. Furthermore, this software also allows you to extract the soundtrack of your favorite AVI, MPEG, MP4, MPG, 3GP, DivX, Xvid, ASF, VOB, MKV or WMV movies with excellent sound quality.