Converting recorded wav calls to mp3

That was not the solution I needed but it pointed me in the direction. With a executable post script of: /var/lib/asterisk/bin/convert_recordings.sh ^{TIMESTR} ^{FROMEXTEN} ^{CALLFILENAME} ^{UNIQUEID} ^{ARG3} and code of:

/bin/nice /bin/sleep 3
dy=$(date '+%Y')
dm=$(date '+%m')
dd=$(date '+%d')
file_age=35
wavfilenopath="$(echo $dtpath$3.wav | sed 's/.*\///')"
mp3filenopath="$(echo $dtpath$3.mp3 | sed 's/.*\///')"
dtpath=/var/spool/asterisk/monitor/$dy/$dm/$dd/
/bin/nice /usr/local/bin/lame -b 16 -m m -q 9-resample "$dtpath$3.wav" "$dtpath$3.mp3" && rm -frv "$dtpath$3.wav"
/bin/nice /bin/chown  asterisk:asterisk $dtpath/$3.mp3
# Update the CDR Database
mysql -u root -s -N -D asteriskcdrdb<<<"UPDATE cdr SET
recordingfile='$mp3filenopath' WHERE recordingfile = '$wavfilenopath'"

It runs the conversion on only the intended call and then updates the cdr and removes the wav file.

Thank you dicko for your assistance.