I've had a number of conversations with Paul Warren, the originator of MidiRedirect, over the years. Sadly, Paul got tied up with many other projects and did not have the time nor the complier to convert MidiRedirect to 64 bit.

But, I can confirm that it still works fine with jBridge v1.7b3 in the 64 bit version of BIAB 2019.

I typically run MIDI out from BIAB to both of my hardsynths, using the MidiRedirect, and run RealTracks all at the same time in the same song. Running out to your keyboard should be no different. All that you would need would be to have a patch listing for you keyboard in .PAT file form in BIAB to be able to select the patch you want played from the keyboard.

Jeff

Win11, Intel i7 7700K 4.2Ghz, 32Gb RAM, 2x1Tb HD, 500Gb NVMe, BIAB/RB 2024, MOTU 828MK3 audio, MOTU Midi Express, Yamaha Montage 7, DX7II, TX802, Motif XS Rack, Roland Fantom XR Rack, Oberheim Matrix 1000, VoiceLive3 Extreme, Kontakt 6, SampleTank 4.3