That's a lot to get through I will read that more later.
I'm only getting the little .di files with Reaper.
If you are using BBW4 you might run into the always on issue with the DAW not releasing the audio driver if Windows uses it.
BBW4 should not have to decompress, load into RAM if you are just generating and not need to preview, it should just generate the data I can see the RAM filling up in bbw4 in Task Manager.
Reaper loads in instantly if you have all the peak files created already. I uploaded a script to do that but the plugin can be made to do it.
Reaper is ok, but other DAWs don't get the advantage, you can't playback bbw4 in sync to the DAW you still have to wait for wav render.
It's the Biab transport sync VST again...
If I go in the Style Picker and down the bottom and click custom I get the soloist track from the frozen SGU, I don't know if it's still frozen ?
I don't have access to the track buttons in the track display at the bottom of the Style Picker to add tracks.
Basically you are just using bbw4 the same way you can use bbw but in bbw you have more control and options than bbw4, you may as well "show" bbw4 as a normal Biab.
Better still just have a send to Reaper button in the normal Biab, that I did mention many times.
But meanwhile for all those that don't uses Reaper it's the same old wait.

You see how Sforzando was playing the wav instructions and playing back all the wma sections.

The main Biab is great now with multi pickers and the new tracks view with riff edit !!!!!!

What is done is done how you got it now, at the least you should aim to get the Plugin to play the wav instructions directly eventually so if you are going to use bbw4 to preview the styles to your chords you want it to instantly send that data to the Plugin as txt data not wav files so all DAWs have the instant benefit.
I have other solutions to help that I have posted and will post some more soon when things settle down.

Originally Posted by musocity
Adding more tracks to RB and all this wav data needs still to be saved in the SEQ, these could grow immensely.
If you could load a wma or wav file non destructively this would increase RB's usability no end

Here's the thread you can see them getting Reaper to play wma direct with Media Foundation, after some dramas it all worked out.
v6.56+dev0430 - April 30 2022

This would be a very big step, allowing RB to read frozen SGU tracks instantly into RB,
it could just read the wav instructions from bbw2 directly into RB without bbw2 having to decompress wma, load sections into RAM then render down to wav then load into RB.
Originally Posted by musocity
The BBPlugin will be released in a few days that should give an idea of the way things will go depending on what state that is at now. Hopefully it should have all the generate code contained within the JUCE and to play the wma files direct like sforzando, or playing the wma files direct from the bbw4 wav instructions, or with not much change how it is now.