Oh, and I got it reading the current database format.

Cool. Make sure, though, that you can find fids both using the
old flat directory structure and the newer hierarchial structure
(/driveX/fids/_YYYYY/ZZZ).

I need to add a master list or else decipher the current player's master list (if it has one

You mean the root playlist? It's fid 100.

Pim