"so how do you get the edited audio from Reaper back into the BIAB project without creating an audio file"
The whole idea is to get out of Biab into a modern DAW where you have a 1000 times more control and freedom to do what you like without creating a hard drive full of wav files, you don't want to get back in Biab.
I can regenerate any section of any track directly in Reaper.
I can generate a whole new track.
I can generate RealCharts.
I can generate midi tracks.
I can generate all the style tracks.
I can instantly change an FX RealTrack into a Direct Input with all the same sections playing.
I can instantly change back from DI to FX RT.
I can instantly change a stereo RealDrums track into 10+ stems tracks.
I can generate up the missing Holds for UsersTracks.
I can generate up Midi UsersTracks.

Is that a good thing or a bad thing ?

The best thing about Biab is it's content and all the wonderful content is in a simple txt file.
Don't forget I spent years in the RealBand jail of crashing, frustration and massive project files.
If I had know I could do this back in 2009 with Reaper I would not have spent all these years here.
This way is heaven !



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