Hi babarton,

Thanks for taking the time to help.

<Can you tell me if you can hear anything if you play your keyboard while BIAB is playing?>
Just the BIAB song being played.

<Also, can you tell me where you are selecting the THRU patch change, and where is the message you quote appearing?>
The Patches tab that is to the right of Piano tab and extreme right of Mixer tab. The message appears where the patch name should be displayed.

Thanks again!