Hide Certain File Types

I'm trying to hide certain file types within my movie and tv folders, on my external hard drive. I have a WDTV and it automatically downloads movie and tv info into 2 files per item; 1 .xml and 1 .metathumb. It's fine when the drive is plugged into the WDTV but when it's plugged into the Mac, it's difficult to find certain items when I have to sort through all these "useless" files. I can't sort by file type, because I'm already sorting by date modified/name, etc.

Anyone have any ideas...

Hide Certain File Types