--- /dev/null
+#/bin/bash
+
+# Script written by Trey Blancher (support@digium.com)
+
+# This script is designed to convert all files of type $SRC to
+# the $DST format, for the given $LANGUAGE. It traverses the given
+# language directory (by default in /var/lib/asterisk/sounds/), and
+# converts each file with filename extension $SRC, and converts them
+# using Asterisk to files with type and extension $DST.
+
+LANGUAGE=en # change accordingly, if converting custom sounds you may want to omit this variable
+SRC=gsm # change accordingly (e.g. to wav, etc.)
+DST=g729 # change accordingly (e.g. to wav, etc.)
+SOUNDS=/var/lib/asterisk/sounds # for custom sounds change this directory to your custom sound directory
+
+for file in $(find ${SOUNDS}/${LANGUAGE}/ -depth -type f -name *.${SRC});
+do
+ #echo $file
+ asterisk -rx "file convert $file $(dirname $file)/$(basename $file $SRC)$DST"
+done