I don’t recall seeing this question before. To my knowledge, there is no way to do this in BIAB. You might consider doing a post in the Wishlist Forum here.

Since you mention Rendering, I’m assuming you want to direct different MIDI tracks to different virtual instruments, and you have multiple MIDI synths to give you each of the sounds you want. Is that correct?


BIAB 2026 Win Audiophile. Software: Fender Studio One 8, Swam horns, Acoustica-7, Notion 6, Song Master Pro, Win 11 Home. Hardware: Intel i9, 32 Gb; Presonus Quantom HD8 & Faderport 8, Royer 121, Adam Sub8 & Neumann 120 monitors.