[itsme]

I use MS with
"Let MobileSheets Manage My Files" = OFF.
"Expose Database File" = ON
and the default MobileSheets storage location
It works fine with some PDF files in
/storage/sdcard1/_Fakebooks (this is an external micro sd card)
some sheet music in
/storage/emulated/0/_MobileSheets (this is the "emulated sd card" which is part of the internal flash)
I manage my sheet music in _Fakebooks and _MobileSheets with TotalCommander for Android and FolderSync and update MS using its "Batch Import"
MS stores its data like database and so on in
/storage/emulated/0/Android/data/com.zubersoft.mobilesheetsprobeta/files
This works fine, as in my understanding MS needs write access only for its own files and won't write into sheet music files. Please correct me Mike, if I'm wrong.
Thus MS needs only a few Megabytes of precious internal flash, the mass of data is on a 32 GB external sd card that I can easily replace with an even bigger one if required (what I don't expect to come soon)