copy update

src/freedombone-app-koel

@@ -207,7 +207,7 @@ function koel_import_from_usb {
         dialog --title $"Import music from USB drive" --msgbox $'No Music directory found on USB drive' 6 50
         backup_unmount_drive ${USB_DRIVE}
     fi
-    cp -r $USB_MOUNT/Music/* /music
+    cp -ru $USB_MOUNT/Music/* /music
     backup_unmount_drive ${USB_DRIVE}
     dialog --title $"Import music from USB drive" --msgbox $'Import complete. You may now remove the USB drive' 6 50
 }