[Marshland]

There are Fake Book index PDFs available which are very useful, just search, then click on the found song to launch the relevant book at the required page. All Mobilesheets would need to do is to be able to launch (or switch to) the PDF from the index links.

For gig use I would recommend using an external program to extract the relevant pages and create a single song PDF. This also gives you the option to improve on the original scan and crop it for use on your own tablet.