For playing and listening through your keyboard:

Midi input should be your Yamaha Midi driver for in/out if you are using the keyboards sounds to play the midi parts in Biab with. Opt/midi driver in Biab. The Yamaha midi driver should be listed if it was installed correctly.

Look down at the audio button in there (midi driver set up) and select the Tascam. You will have to route the audio out of your keyboard (line outs) to two inputs on the Tascam. You will be listening to the playback from the Tascam soundcard.

For playing through keyboard but listening to VSC etc:

You will need an ASIO driver to play and listen in realtime in Biab. You will set your AUDIO driver to the ASIO once installed. Then select VSC DXi in the midi driver in/output, there is a box to check mark. Once selected, select the VSC/Forte in the first slot of the menu that pops up. Make sure your midi cables are connected properly and you will listen to the playback from the Tascam.

You would be better off by using your keyboards midi driver to play and record in Biab with, but you can also use an ASIO driver as well. If you like the VSC/Forte sounds better, and not playing a live gig, record the midi data with the Yamaha driver first. Then select the VSC DXi driver for playback and rendering to audio, if those are the sounds you like better. Using the keyboards midi driver will record in time and should give zero latency.

The DXi set up in Biab is a check mark box in the midi driver area. That switches from onboard midi to use the DXi midi. You will see a menu pop up when the check mark box is selected. You then need to set the first box option there to either the VSC or Forte to hear anything playback while the song in Biab is playing.

It sounds complicated, but once you see where and how Biab gets set up for midi parts, you should be able to route your set ups correctly.

Trax