The PC and iOS Adobe Digital Editions apps support SMIL audio (aka media overlays) for reflowable text in ePub3's. The Android app doesn't. This is a showstopper for our customers who want to read our multimedia ePub3 books on their Android devices.
Is Adobe aware of this problem, and if so when is it going to be fixed? Please contact me if you need further information, or you can download the free sample of Pride and Prejudice from our website: http://www.smartbookbinders.com/tryit.html. The integrated text and audio work flawlessly on Windows and iOS, but not on Android.