[Harry_M]

Nice couple of suggestions from Dixiesax.

As an interim, if it's easier or quicker, would it be possible for the band leader to email a some sort of setlist file to each band member for upcoming gigs? Could this setlist file have the song pdfs embedded in it?

I would also appreciate such a sync mode - I am a Choir leader with some members having a tablet (with mobilesheets :-) and it gets really complicated to keep them in sync.

Your proposal, fausto, would work for us if such an email with setlist would not create duplicates of existing songs, but would replace them if they are already in the database.
Don't know if "same song" should be identified via song name or something else, though (our songs normally have the song name and the instrument / voice name in their pdf).