Q: I have an 80GB iPad classic and I have just bought an e-book with the file extension .epub and I cannot actually play the file on my device. What do I have to do to make it possible?
A: Unfortunately, it sounds like you may be confusing e-books with audiobooks. Electronic books in the ePub format are designed to be read on a device’s screen as opposed to being listened to like an audiobook would. THe iPod classic does not provide a built-in e-book reader like iOS devices such as the iPod touch, iPhone and iPad.
There are utilities available that can convert files into an iPod Notes format so that they can be read through the built-in Notes feature on a traditional iPod, but these are designed to work with text files. The only workaround would be to convert your ePub e-book into a text format using a tool such as Calibre and then take the resulting text file and use a tool such as http://ebookcreator.sourceforge.net/ to convert it into a series of iPod Notes files. Note that you will lose all formatting in the process of doing this, as the iPod Notes feature supports only plain text, and you may not even be able to do this if the e-book you’ve purchased is copy-protected using Digital Rights Management (DRM), as books purchased from Apple’s iBookstore are.