No Alpha, no Beta testing yet, usually late Nov.
That is it there is no "Alpha" development input just Beta with a few days to test for bugs, not how it works and what needs improving, so it goes public and Dec Jan... are spent fixing.
Yes, with midi it is generated instantly the audio tracks could work the same way.

The BiabVST should be Instant Gen/Play and Biab main app sync to any DAW when you need to Gen up some extra tracks to fit best in your DAW session without render, drag, render, drag... filling up hard drive with WAV's, then these issues will all be solved once and for all:

Originally Posted By: Marty Ricciotti
...So right now I make tracks in BB then export.
When I need some more instruments I open BB again and then export more tracks.

I have the BB vst loaded in Reaper but I only use it their for the track settings and following the chords when I play along.
I don't like the way the BB vst needs to generate a set of tracks to your temp folder that you have to go and clean out.

But... this is a bit of a slow way to arrange....

Biab Track Injector for Reaper
Free Biab Chord Picker Tool