You can override the default message displayed when a field fails a validation rule e.g. title="First name - Custom first name message". ValidationAide will split the title at the " - ", the first part being the field friendly name, the second the custom message displayed whenever the field fails a validation rule.
You can override the message separator by settings "fieldMessageSeparator" e.g. $("#TestForm").validationAideEnable(null, {fieldMessageSeparator: " # "});