mp3dump take two - better audio quality

#!/bin/bash
#
# Simple script to rip the audio stream of a FLV to MP3
#
# usage:    mp3dump INPUT.flv ARTIST TITLE
# example:    mp3dump FlashhxSjv3 "Foo Bar" "All your Base are Belong to Us"
# Author:    Milian Wolff
# depends on:  mplayer, lame
#   optional:  ecasound for stereo sound emulation
#   optional:  mp3info to write title and artist mp3 tags
 
if[["$(which mplayer)" == ""]]; then
echo-e"\033[41mThis script requires mplayer!\033[0m"
exit
fi
 
if[["$(which lame)" == ""]]; then
echo-e"\033[41mThis script requires lame!\033[0m"
exit
fi
 
if[["$1" == "" || "$2" == "" || "$3" == "" || "$4"!= ""]]; then
echo"Usage: $(basename $0) INPUT.flv ARTIST TITLE"
exit
fi
 
if[!-f"$1"]; then
echo"Input file \"$1\" could not be found!"
exit
fi
 
if[["$(file -b "$1")"!= "Macromedia Flash Video"]]; then
echo"Input file \"$1\" is not a valid flash video!"
exit
fi
 
dest="$2 - $3.mp3"
tmpfile="/tmp/$$-$dest"
 
echo
echo"Your mp3 output file will be: $dest"
echo
echo
 
echo-n"dumping audio to mp3 file..."
mplayer-nolirc-dumpaudio"$1"-dumpfile"$dest"1>/dev/null
echo-e" \033[32mdone\033[0m"
echo
 
echo-n"reencoding with lame - this might take some time..."
lame--silent--preset standard --mp3input"$dest""$tmpfile"&&mv"$tmpfile""$dest"
echo-e" \033[32mdone\033[0m"
echo
 
if[["$(which ecasound)" == ""]]; then
echo"You can optionally install ecasound to simulate stereo sound"
echo
else
echo-n"simulating stereo sound..."
 
  ecasound -d:1-X-i"$dest" -etf:8-o"$tmpfile"1>/dev/null &&mv"$tmpfile""$dest"
 
echo-e" \033[32mdone\033[0m"
echo
fi
 
 
if[["$(which mp3info)" == ""]]; then
echo"You can optionally install mp3info to write basic mp3 tags automatically"
echo
else
echo-n"writing basic mp3 tags..."
 
  mp3info -a"$2"-t"$3""$dest"
 
echo-e" \033[32mdone\033[0m"
echo
fi
 
echo"Have fun with »$dest«"