diff --git a/zosu/zosu-rater_old b/zosu/zosu-rater_old
deleted file mode 100755
index c59276e..0000000
--- a/zosu/zosu-rater_old
+++ /dev/null
@@ -1,98 +0,0 @@
-#!/bin/sh
-
-if [ $# -lt 2 ]
-then
-  echo "$0 <rate> <file>"
-fi
-
-RATE="$1"
-FILE="$2"
-
-OUTPUTFILE="$(echo "$2" | sed 's/\.osu//g' | cut -d']' -f1) x$RATE].osu"
-
-AUDIO=$(grep "AudioFilename:" "$FILE" | cut -d' ' -f2- | tr -d '\n\r')
-AUDIORATED=$(echo $AUDIO | cut -d'.' -f1)-x$RATE".mp3"
-
-echo "" > $OUTPUTFILE
-rm "$OUTPUTFILE"
-
-output_line () {
-  printf "%s\r\n" "$1" >> $OUTPUTFILE
-}
-
-audioRate () {
-  ffmpeg -i "$AUDIO" -filter:a "asetrate=$(ffprobe -v error -show_entries stream=sample_rate -of default=noprint_wrappers=1:nokey=1 "$AUDIO")*$RATE" -y "$AUDIORATED"
-}
-
-LINES=$(wc -l "$FILE" | cut -d' ' -f1)
-FFILE=$(cat "$FILE")
-
-step_skip ()
-{
-  printf "$(echo "$FFILE" | grep -B $LINES "$1" | head -n -1)" >> $OUTPUTFILE
-  FFILE=$(echo "$FFILE" | grep -A $LINES "$1" | tail -n +2)
-}
-
-step_skip "AudioFilename:"
-output_line "AudioFilename: $AUDIORATED"
-
-PREVIEW=$(echo "$FFILE" | grep "PreviewTime:" | cut -d' ' -f2 | tr -d '\r\n')
-step_skip "PreviewTime:"
-output_line "PreviewTime: $(echo "$PREVIEW / $RATE" | bc | cut -d '.' -f1)"
-VERSION=$(echo "$FFILE" | grep "Version:" | cut -d':' -f2- | tr -d '\n\r')
-step_skip "Version:"
-output_line "Version:$VERSION x$RATE"
-
-step_skip "BeatmapID:"
-output_line "BeatmapID:0"
-
-step_skip "\[TimingPoints\]"
-TIMINGPOINTS=$(echo "$FFILE" | grep -B $LINES "\[HitObjects\]" | head -n -1)
-OBJECTS=$(echo "$FFILE" | grep -A $LINES "\[HitObjects\]" | tail -n +2)
-
-output_line "[TimingPoints]"
-
-N=$(echo "$TIMINGPOINTS" | wc -l)
-I=0
-for LINE in $TIMINGPOINTS
-do
-  # TODO: ignore colors
-  I=$((I + 1))
-  printf "Timing:  %s%%\r" $(echo "$I * 100 / $N" | bc)
-  if [ -n "$(echo $LINE | grep ",")" ]
-  then
-    VAL=$(echo "$(echo "$LINE" | cut -d ',' -f1) / $RATE" | bc | cut -d '.' -f1)
-    BPM=$(echo "$LINE" | cut -d',' -f7)
-    if [ $BPM -eq 1 ] ; then
-      VAL2=$(echo "$(echo "$LINE" | cut -d ',' -f2) / $RATE" | bc -l)
-      output_line "$VAL,$VAL2,$(echo "$LINE" | cut -d ',' -f3-)"
-    else
-      output_line "$VAL,$(echo "$LINE" | cut -d ',' -f2-)"
-    fi
-  else
-    output_line "$LINE"
-  fi
-done
-echo ""
-
-output_line "[HitObjects]"
-N=$(echo "$OBJECTS" | wc -l)
-I=0
-for LINE in $OBJECTS
-do
-  I=$((I + 1))
-  printf "Objects: %s%%\r" $(echo "$I * 100 / $N" | bc)
-  if [ -n "$(echo $LINE | grep ",")" ]
-  then
-    V12=$(echo $LINE | cut -d',' -f-2)
-    V3=$(echo "$(echo "$LINE" | cut -d ',' -f3) / $RATE" | bc | cut -d '.' -f1)
-    V45=$(echo $LINE | cut -d',' -f4-5)
-    V6=$(echo "$(echo $LINE | cut -d',' -f6 | cut -d':' -f1) / $RATE" | bc | cut -d '.' -f1)
-    CPM=$(echo $LINE | cut -d':' -f2-)
-    output_line "$V12,$V3,$V45,$V6:$CPM"
-  else
-    output_line $LINE
-  fi
-done
-echo ""
-audioRate