Downloading zip files via email can be done for iOS (iPhone, iPad) see:
http://www.pgmusic.com/support.iphone.htm#downloading3
This is an easy item to open the BIAB app and load it with chords and including the accompyïng music (m4a).
It seems also possible to open zip files from other applications then email with the BIAB. It functions.

My wish is that the same thing could be done with Android. This item does not yet excist in Android and could be of great importance. It is not only email zip files that should open the BIAB but also zip files from other applications.

The methode offers the possibility to add a link to a pdf file that points to a zip file that can be opened in the BIAB app or that opens an attached pdf zip file. So you can have your song music (in your pdf), open the equivalent BIAB file and be able to use the chords, transpose, play-along and listen while using the BIAB app.

Musicians and music publishers are still wasting too much paper...come on men we live in the digitised age...Wake up!