As I have already mentioned another way to get more tracks is with a VST in your DAW that sends sync to Biab set to slave mode, OR load that VST into Biab sending to another instance set to slave mode.
Here's a video demo of finding a multiriff for tracks you have in your DAW.
Track 1 Original is original track or tracks in the DAW,
track 2 is the Biab Transport VST sending play/stop/pause/bpm/ppqpos to the main Biab app,
reastream vst is loaded in Biab Master fx track sending audio,
track 3 is reastream vst receiving biab audio (AUNetSend & Receive in Mac).
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