I have just spent the last 5 hours deleting meta data names and i'm only on the letter C. 
Now i have to delete the doubles and "no worky's" 
Oh no! Youki meant just open the file in notepad (<AtomicFE Dir>\Metadata\fulllist.txt) and delete everything - should take about 3 seconds! Make a copy, click Edit, select all, then hit the delete key, save, done!

Sorry, looks like a bit of miscommunication!
Or, just rename your file, and save the attached in the same directory...
This will just list all the rom names in your roms folder. If you want to remove dupes and no workies - I think you would have to set up an exclude list, and put the entries in there. To do this, you would go to the Game List Tab in Atomic Manager, add the games you want to exclude in the game list file, and click the save to Exclude file button.
Good thing you didn't really have anything else to do for those five hours, right?
