If you want to do this on Mac go here BBoutput.txt and +1

If you had BBoutput.txt in Band In A Box/Data
this would have all the track data for every current track in Biab so as you generate it will update the BBoutput.txt file,
when I run the Reaper script it will read BBoutput.txt and INSTANTLY import all the tracks !
I could have another script that could choose what tracks to import or to update any track instantly with new sections or new track.

This way ANYONE could use the track injector with zero hacking and NO AutoHotkey needed.
NO waiting to render consolidated aiff files. It will give total creative control of drums, solo instruments etc.. like creating a 4 5 or 6 bar drum ending, having what drum section you want where, being able to adjust shot vol levels and advance or retard them.
Being able to instantly change a RealTrack in Reaper from FX to DI or vice versa keeping the same notes.
You could also use any audio format you like rather than just m4a or aiff by batch converting your RealTrack\Drum source files to other formats like FLAC WavePack MP3 OGG WAV etc...
You can also import tracks from a frozen SGU you open without the need to generate it up into RAM as it will write the current frozen tracks to BBoutput.txt on opening.
It could also import the midi data directly.
There are also scripts to import chords from Biab SGU/MGU to regions or markers in Reaper.

This shows how fast they are imported, no waiting for it to render down to aiff, if Biab worked the same way you would not have to wait while it renders sections together into RAM, it would be so quick:
Zoom++



If we had this also A VST to send Tempo/Play/Stop/Loop/Continue to main Biab app from DAW it would give so much more control to be able to add extra instrument tracks to a recorded live session in any DAW rather than hiring session players, Biab as a slave will follow any decimal varying tempo map in the DAW.

https://stash.reaper.fm/u/ReaTrak (Scripts for Biab Reaper)
Open SGU in Reaper Instantly