Quote:
I removed everything from the problem player by doing a disk builder on it (both drive0 & drive1), then FTP'd the entire contents of drive0/fids & drive1/fids from my "Good" player onto it. Shouldn't that make them identical?

Yes, it should! If you have a good copy of the entire contents, try figuring out the FID of an example broken playlist (e.g. 230), and go and find the corresponding file (called "230") on both the good and bad players. FTP the playlist files to your PC (from both players) and compare them. (They're binary, so you'll need something like hexdump or "od -t x4".) What sort of brokenness are we talking about here? Extra FIDs in playlists? FIDs missing? Nonsense fids (e.g. not multiple of 16)? Are both players the same software version?

Peter