just nothing in var

Ah, I misread your earlier post. To clarify: You'd expect to find nothing in /drive1/var, regardless of the content on the disk. You might see files in here if you've added another disk, and this disk was previously the primary.

Files in /drive1/var should be harmless, but there have been reports of oddness. Delete them if you're feeling paranoid.

The database and playlists are stored in /drive0/var, and can be completely rebuilt from the data in the *1 files stored in the 'fids' directories.

The music is kept in /drive0/fids and /drive1/fids and is distributed as described in that FAQ entry.