Hey,
This will be vastly improved with the brand new 4.1.x firmware which is due as a beta very very soon.
This is thanks to the highly coveted MIDI song select feature.You will be able to send an MSB (CC0), an LSB (CC32), and a PC command to individually select BB and Aeros songs. Aeros will only respond to CC0 and PC and BB only to LSB and PC. This allows you to use different drum sets with the same Aeros song and vice versa.
This will also have the first midi expansion as well as improved BB and master clock interaction 