Save the PID of the music script in order to properly kill it

fs/opt/groomer/init.sh

@@ -13,11 +13,14 @@ fi
 clean(){
     echo Done, cleaning.
     ${SYNC}
+    kill -9 $(cat /tmp/music.pid)
+    rm -f /tmp/music.pid
 }
 
 trap clean EXIT TERM INT
 
 ./music.sh &
+echo $! > /tmp/music.pid
 
 # Dumb libreoffice wants to write into ~/libreoffice or crash with
 # com::sun::star::uno::RuntimeException
@@ -26,4 +29,3 @@ chown -R kitten:kitten /tmp/libreoffice
 
 su ${USERNAME} -c ./groomer.sh
 
-