I think I figured it out. I wasn't selecting the app I wanted to launch. Didn't know where the app list was but you just have to tap the icon (green box) with the Android logo and shows you the list of all your stock and installed apps.

Going to reprogram the button with the three dashes for iBUS app and the BT for launching A2DP.

__________________
2005 Imola 4.8iS