--- /dev/null
+#!/bin/bash
+
+INPUT=$1
+START=$2
+STOP=$3
+
+if [[ -n $START ]]; then
+ START="-ss $START"
+fi
+
+if [[ -n $STOP ]]; then
+ STOP="-t $STOP"
+fi
+
+if [[ -z INPUT ]]; then
+ echo "usage: $0 <input> [<start> <stop>]"
+fi
+
+ffmpeg $START $STOP -i $INPUT -acodec libmp3lame -ab 128k $INPUT.mp3