diff --git a/larynx.d/batch_play_wav.sh b/larynx.d/batch_play_wav.sh
index 0a90d1e..7f0d312 100644
--- a/larynx.d/batch_play_wav.sh
+++ b/larynx.d/batch_play_wav.sh
@@ -1,6 +1,36 @@
 #! /bin/bash
 
-for f in ./script.d/*.wav; do
-   read -p "enter to play <$f>"
-   afplay "$f"
-done
+proc_is_running() {
+   ps aux | grep -v grep | awk '{print $2}' | grep ^"$1"$ &> /dev/null
+}
+
+block_proc() {
+   local pid="$1"
+   local limit="${TIMEOUT:-100}"
+   deadline=$(($(date +%s) + limit))
+   while [ $(date +%s) -lt $deadline ] && proc_is_running "$pid"; do
+      sleep 1
+   done
+   kill -9 "$pid" &> /dev/null
+}
+
+main() {
+   cleanup() {
+      kill -9 $(jobs -p)
+      killall afplay mpv
+   }
+   trap cleanup EXIT
+
+   for f in ./script.d/*.wav; do
+      if [ "$#" != "0" ]; then
+         eval "$1"
+      else
+         read -p "enter to play <$f>"
+      fi
+      mpv --no-video "$f" &
+      export pid=${!}
+      block_proc $pid
+   done
+}
+
+main "$@"
diff --git a/larynx.d/batch_txt_to_wav.sh b/larynx.d/batch_txt_to_wav.sh
index a4f88bb..97d9270 100644
--- a/larynx.d/batch_txt_to_wav.sh
+++ b/larynx.d/batch_txt_to_wav.sh
@@ -1,10 +1,11 @@
 #! /bin/bash
 
-for f in ./script.d/*.txt; do
+for f in ${@:-./script.d/*.txt}; do
    echo $f...
    curl \
       -sS \
       -X GET \
-      "http://localhost:15002/api/tts?voice=${1:-"en-us/glados-glow_tts"}&text=$(urlencode $(cat $f))" \
+      "http://localhost:15002/api/tts?voice=${VOICE:-"en-us/glados-glow_tts"}&text=$(urlencode $(cat $f))" \
    > ${f%.*}.wav
+   echo $?
 done