Larry, two-part answer.

It's the Play button for version 2012.5 and earlier, and the GenPlay button for 2013. Yes, that causes a full regeneration of any track not frozen, at least as I understand it (and watch it happening).

Also, I don't recall if it has been mentioned in this growing thread, but the speed of the hard drive matters and for that reason, I run BIAB from a SSD and placed the RealTracks on a mechanical hard drive running at 10,000 rpm. The performance for generating RealTracks improved dramatically over having everything on a typical 7,200 drive. My computer is a four-year old Core 2 Duo, nothing much compared to what's available now, but BIAB runs great.


BIAB 2025 Win Audiophile. Software: Studio One 7 Pro, Swam horns, Acoustica-7, Notion 6, Song Master Pro, Win 11 Home. Hardware: Intel i9, 32 Gb; Roland Integra-7, Presonus 192 & Faderport 8, Royer 121, Adam Sub8 & Neumann 120 monitors.