Read username

src/freedombone-app-koel

 }
 
 function koel_import_from_directory {
+    read_config_param MY_USERNAME
+
     data=$(mktemp 2>/dev/null)
     dialog --title "Choose a directory containing music" --dselect "/home/$MY_USERNAME/" 30 60 2> "$data"
     selected_dir=$(cat "$data")