ffmpeg -i input.mp3 -ss START_TIME -to END_TIME -c copy output.mp3
for example to cut the audio file from 7 seconds to 4 minute 45 seconds ( 285 seconds) ffmpeg -i input.mp3 -ss 7 -to 285 -c copy output.mp3
ffmpeg -i input.mp3 -ss 7 -to 285 -c copy output.mp3