There seem to be at least two xml formats from which SongBeamer can import Bibles, but the support for them seems to vary somewhat.
I noticed that Zefanja format does not work when only a book number but no book name is specified; there seems to be the OpenSong format however where a book number alone is sufficient.
It would be nice to have complete docs as to (a) which formats are supported, and (b) to what extent they are supported.