lame -h -v -B 192 in.wav out.mp3
mpg123 --stereo -w out.wav in.mp3
mplayer -ao pcm:fast:waveheader:file=in.wav -vo null -vc null in.opus
Crop out a selection starting at 00:01:11 and with duration 00:00:29:
avconv -ss 00:01:11 -t 00:00:29 -i in.mp3 -vn -acodec copy out.mp3
or:
mp3splt in.mp3 01.11 01.40
(will create in_01m_11s__01m_40s.mp3)
Split MP3 into nt (for example N=10) tracks, based on silence:
mp3splt -s -p nt=10 in.mp3