@Jazzmandan

to be quite frank, I really don't know....in the menu I've sreenshot above, I've chosen Coyote ForteDXi...but is that really what I should do? Isn't this pulldown menu just to tell BiaB when you're really using an external Module, which is not the case!

So maybe I should use "General MIDI Instrument Misc." here, as is suggested below. I will try this, repeat the render and get back to you.

Further below in the same dialogue, it looks as though CoyoteWT is my DXi/VSTi Synth, isn't it? Look at my screenshot.

Hope this helps
Florian