Adobe Digital Editions + Bluefire Reader

I download protected books from Proquest (Ebook Central). There are only two options for download. For Mac (or PC), you download to Adobe Digital Editions. For mobile devices, you download to Bluefire Reader. I'd really like to be able to read my books in more than one place, i.e. both on my mobile device (iPad) and computer. Any chance I can make this happen? (Of course I can download both versions -- one to my computer and one to my iPad, but this doesn't allow me to sync the books, and that's actually what I need to do. It's useless to me to have two copies of a book where I can't sync my highlighting and annotations.)

Thanks!