You are not alone in your quest. I went so far as to call Pullins and ask if a PDF/eBook version was available. They do have a software version of Linuga Latina that has electronic versions of the text available (PC and Mac versions). However, the impression that I got was that this may mean that the text is readable only while running their program.
Some other options:
Recently discussed here, is an interlinear version of the Gospel of John. The first half is in latin the second half does a word for work breakdown into English: viewtopic.php?f=3&t=39357
Similarly, there are English/Latin versions of the Bible available on Amazon for the Kindle and as an app for the iPhone. While not directly pedagogical, they provide a working framework for sorting out the Latin. You can at least see the English verb tenses and work backwords with Perseus or one of it's local incarnations (Diogenes - PC/Mac, Lexidum - iPhone).
There are a number of basic readers an parallel texts. The difficulty is that most don't attempt the Latin in Latin approach of Linuga Latina. The Orbis Sensualium Pictus is a wonder of a book for vocabulary and for insight into education circa 1600 but doesn't teach grammar. A number of early to intermediate readers are available but assume you have a separate grammar and access to an instructor.
Metorodorus has pulled together a rich collection of resources from google books and other other places, reviewed, summarised and recorded them as audio books here: https://sites.google.com/site/latiumredivivum/