VoiceOver accessibility feature with Adobe Digital not working

Hello,

I have an IPOD Touch and am hearing impaired. I have successfully used the VoiceOver feature with ibooks. I recently purchased an Ebook that requires the use of Adobe Digital to read. It works on my computer with my JAWS software, however when I downloaded it to my IPOD, it will open but it will not read the book. I also downloaded Bluefire but received the same result. I contacted iTunes and they tested it on a known good device and they received the same result.

Any help you can give would be appreciated.

Thank you