diff --git a/acatcher/convert_audio.sh b/acatcher/convert_audio.sh
index 5280bc7..264a579 100755
--- a/acatcher/convert_audio.sh
+++ b/acatcher/convert_audio.sh
@@ -7,6 +7,11 @@ if [ -z "$1" ]; then
   for INFILE in *.raw; do
     FIX="`echo $INFILE | sed -e 's/^\[.*\] //g'`"
     OUTFILE="`basename \"$FIX\" .raw`.wav"
+    if [ -f "$OUTFILE" ] ; then
+      FUDGE="$RANDOM"
+      OUTFILE="`basename \"$OUTFILE\" .wav`-$FUDGE.wav"
+      FIX="`basename \"$FIX\" .raw`-$FUDGE.raw"
+    fi
     echo "converting $INFILE to $OUTFILE"
     #sox -r 44100 -e unsigned -b 8 -c 1 <RAW_FILE> <TARGET_FILE>
     sox -r 22050 -e signed -b 16 -L -c 1 "$INFILE" "$OUTFILE"
diff --git a/acatcher/fix_windows.sh b/acatcher/fix_windows.sh
index a9c5860..eddeee4 100755
--- a/acatcher/fix_windows.sh
+++ b/acatcher/fix_windows.sh
@@ -1,4 +1,4 @@
-#!/bin/sh
+#!/bin/bash
 
 # user configurable stuffs go here
 
diff --git a/acatcher/make_mp3.sh b/acatcher/make_mp3.sh
index 504adbf..d02208c 100755
--- a/acatcher/make_mp3.sh
+++ b/acatcher/make_mp3.sh
@@ -1,4 +1,4 @@
-#!/bin/sh
+#!/bin/bash
 if [ ! -z "$LAME_PRESET" ]; then
   PRESET="$LAME_PRESET"
 else