Is there a secret trick to get RW access?

Heh, you're going to love this one.

Type rw and press the Enter key.

And you get one guess how to put it back into read-only mode.

Just one question: Why do you want to muck around with the filesystem? If you don't know what you're doing, you will quickly ruin your music files, your database, and render your Central inoperable. Sure you want to do that?