Is there a way to import free e-books in my Logos 4 library? For instance, many of John Piper's books can be downloaded for free in a PDF fromat for personal use via desiringgod.org. It would be great to be able to view those via logos (especially on mobile devices) and to search those in logos. I have seen talk about a personal book application coming that can import. Will that application allowing me to do this?