There is an option for this in WBM somewhere, can't remember off hand though.
But either way, what loader you using? I know wiiflow at least will get titles by title id on the wiitdb database so it doesn't matter what they are titled, they will appear correct in the loader once you have selected download titles in the loader.
TBH, I thought this feature was avilable on all the loaders although I only use Wiiflow