Indexing is OK for sorting categories internally, but they don't help with backup or sorting out the actual files when you connect to the computer...

Keeping one card for translations (until they are finished or discarded) one card for the ROM style edits (until they are finished, if they ever are!) and a card for just trying stuff out helps keep the Card memory from getting bloated with stuff you'll never use.

There is also a utility to allow the Internal memory to be backed up onto a card, and transfered back without messing up the DB (you can't use the card to play from, it backs up the Internal DB) as a 'safety' in case of an on the gig crash, and might also be a good strategy...