"Make sure in the midi driver settings (Opts Prefs Midi) that the loop thru is not checked.
"

I don't see a 'loop thru' checkbox on the window title "Midi/Audio Drivers Setup".
BUT my echoing went away...I am not sure why.

Next challenge is that since my Quadrasynth appears to be to ancient to be listed in the same screens "General MIDI Instruments Misc" pull down I want to keep BIAB from sending any patch changes to my Quadrasynth as whenever that happens it ends up setting channel(s)
to "Perihelion" which is a nerve wracking sound that I have grown to cringe at. I believe its only significance is that it is the very first sound on the main bank of the synth.

Here is what I have done to try to turn off all patch changes:

Options/Preference/Midi Options....then made sure that all the checkbox's on the right that start with the option "Allow ANY patch changes" are unchecked.

Is there anything else I need to do to prevent all patch changes? I think that even if it is only changing the style it sends a signal for a channel to change and most of the time it changes to the dreaded 'Perihelion' sound. If I was smart enough I guess I would delete that sound from the synth.

Question: Is there any entry in the above mentioned "General MIDI Instruments Misc" that would at least come close to my Quadrasynth bank? Or, is there anyone out there using a quadrasynth that has come up with one of whatever files those are on their own?

Thanks to all very, very much. I am overwhelmed by the responses. I wish I had known about this forum long ago.

Jim Lee