I need to set the title and author in a collection of PDF files and do not want to do this manually in Acrobat.

pdfHarmony is a server-based application that can edit or add properties in the document information section of one or more PDF documents. You can change/add the Title, Author, Subject, Keywords and Custom fields. You can also set the page mode, open action, bookmark display and many more features. Please visit the pdfHarmony page on our website for more information.