diff --git a/audio/mp3car.sh b/audio/mp3car.sh
index d79d4d2..3e3d285 100755
--- a/audio/mp3car.sh
+++ b/audio/mp3car.sh
@@ -15,7 +15,7 @@
 # Dependencies: pacpl, lame
 
 if [ $# -lt 1 ] ; then
-  echo "Usage: $0 <input> [input [...]]"
+  printf 'Usage: %s <input> [input [...]]\n' "$0" >&2
   exit 1
 fi
 
@@ -23,11 +23,9 @@ BASEOUTDIR="$HOME/tmp/mp3car"
 LAMEOPTIONS="-v -b 32 -B 128"
 
 for INPUT in "$@" ; do
-  echo
-  echo "*** CONVERTING \"$INPUT\" ***"
+  printf '\n*** CONVERTING "%s" ***\n' "$INPUT"
   OUTDIR="$BASEOUTDIR/$(basename "$INPUT")"
-  echo "Destination directory: \"$OUTDIR\""
-  echo
+  printf '\nDestination directory: "%s"\n\n' "$OUTDIR"
   mkdir -p "$OUTDIR"
   pacpl \
     --to mp3 --encoder lame --defopts 0 --eopts "$LAMEOPTIONS" \