Noel,

Songs that ends with a number are songs that use built-in styles. You can see them in the menu "Styles" / "Choose from 24 'built-in' styles". (*.?g9 is a song with pop-ballad style).

I suppose that the latests versions of biab can read old songs even if they were renamed ?
(the first byte of the file is different)

My 2 cents.


Free tools for Biab:
Biab Scales and BIArpeggio to practice scales/arpeggio
Biab Explorer: the other song picker