A lot of us here value our email security, im sure you can understand that. we are a peer to peer forum helping others solve their problems. so...
My advise is to upload the photo to a free photo site and post the link here with a space between the Https photo. com.
because you don't have more than 25 post you can not post links (for spam security).
post the link and I will take a look at it.
Also- open:
-Preferences > Devices: under audio devices, make sure your Tascam is selected (check the boxes)
-Preferences > Midi Devices: make sure your devices are selected (again check the boxes)
-Inset a soft synth using the Insert menu on Sonars menu bar.
-when your "Insert synth properties" menu opens (a pop up box) select Simple instrument track.
(this is just to get yourself started)
This will route your midi track to the synth - then via the master bus.
It helps when you are thorough in your explanations when trying to problem solve.
you didn't even mention how you inserted the midi track / your synth.
sometimes this is the problem itself.