In BB, under the Audio menu, there is an option saying
“Render song to audio track (and mute tracks).”
Why would one do that? What is gained by doing that?
Good question. I export audio all the time and never knew that option existed. Here's what the manual has to say:
Render Song to Audio Tracks (and mute tracks): Use this to render all tracks to the Audio track and disable track generation.
Un-Render Song from Audio Tracks (Enables tracks, erase audio track):
Use this to erase the rendered Audio track and restore track generation.
So the idea is to change the project into an audio snapshot that will be what you hear when you hit play, because everything else has been frozen and silenced.
Note that this does NOT export audio files for use by another application, and prevents further non-audio development unless reversed.So I also wonder: Why offer this option? I guess somebody asked for it, but why?
My best guess is that this feature is for those who use BIAB in a 2-stage process, (A) generating and perfecting the band tracks then (B) post-processing the audio result without leaving the application. It’s like: OK, time for the DAW, but the DAW is still BIAB, and if you eventually export to audio files that's to save a final playable product.
To the OP: If you can arrange and hear music, you aren’t missing anything. =8^) If you’re looking to export audio for sharing or further processing, that another matter, but it sounds like you aren't, and even if you are it probably won’t involve that particular menu option.