while true;do
if mpc | grep -q playing; then  
echo "p`mpc current`" | cut --bytes 1-40
echo "K`mpc -h 127.0.0.1 volume | perl -pe 's/^volume://' | perl -pe 's/%$//' | perl -pe 's/^ //'`"
else
echo "P`mpc current`" | cut --bytes 1-40
sleep 1;
echo "K`mpc -h 127.0.0.1 volume | perl -pe 's/^volume://' | perl -pe 's/%$//' | perl -pe 's/^ //'`"
fi
sleep 5;
done