The problem with using it with Biab is Biab only has one midi output port but that may not matter if you are using all Real Tracks and Real Drums because those are audio files. In that case you can use T-Racks as a VST plug in. If however, you are using a combination of midi tracks with a midi synth with a few RT's then the synth is using up that one midi output port and you can't use another VST or DXi plugin.
To save yourself a lot of confusion you're much better off using a mastering plugin in Real Band. Assuming you have the current version of Biab you already have RB. Jump over to the RB forum and read all about it. It's a great program.

Bob


Biab/RB latest build, Win 11 Pro, Ryzen 5 5600 G, 512 Gig SSD, 16 Gigs Ram, Steinberg UR22 MkII, Roland Sonic Cell, Kurzweil PC3, Hammond SK1, Korg PA3XPro, Garritan JABB, Hypercanvas, Sampletank 3, more.