E-books. Should they be enhanced or not? I've just been p...

E-books. Should they be enhanced or not? I've just been publishing some more short stories for the Writer's Choice Shorts series. It is nice and simple, a straightforward formatting task to prepare them but should they be enhanced with links, pictures and sound effects.

I am tempted by www.booktrack.com.
They have a simple to use - their words not mine- system. In their spiel to authors they state:


Booktrack Studio is a free-to-use sound production platform that provides the ability for authors...