Use the headset? Not easily, sadly. You can now sign up to a Meta account instead of a Facebook one, but it wouldn't transfer your purchases over from the original account, as far as I know. And it's still Meta, so tomato/tomato in many ways.
Which means either saying goodbye to anything you bought, or just deleting as much of your FB account's content as you can while leaving it nominally 'active'.
EDITED: 08:51 by MILKO