Forgive me if this has been covered before--I didn't see a post title that seemed to match.

I always thought that Nooks used epub files, but I was considering buying a title from the Barnes & Noble web site and it says "Read exclusively on these devices & apps" and then lists the Nook models and Nook software for Ipad, etc. Is this an epub file and have they made it so it can only be read on Nook devices? I have a Sony & don't want to buy the book until I'm sure it's readable. (In case you're wondering, they have a substantially cheaper price than anyone else selling it as an epub.)

Thanks for any help.

Sony doesn't support the Nook version of DRM, so unless you remove the DRM, you can't read it on your Sony..

Thanks

if you haven't solve the DRM issue, here is a commendation:

Why pay when our friend Alf and his apprentice have the key to the goods for free?