INSERT INTO site (setting, value, updateddate) VALUES ('saveaudiopreview', 0, now());

alter table userroles add canpre  tinyint(1) unsigned NOT NULL DEFAULT 0;

UPDATE userroles SET canpre = 1 WHERE NAME = 'Admin';

UPDATE menu SET menueval = '{if $userdata.canpre!=1}-1{/if}' WHERE href='predb';