Here is a great group of brass clips - for free.

http://www.newyorkbrass.com/free-brass-sample-library.html

There is a link at the bottom to download the zip file.

I don't know how you would use them in BIAB itself, but you can certainly use them in a DAW alongside your BIAB tracks.



I used them once. If you are interested, you can find that here:
https://www.pgmusic.com/forums/ubbthreads.php?ubb=showflat&Number=321789&page=1