Make sure you have Transition Forgiveness enabled on the BeatBuddy if you plan on having the Aeros control the transitions on BB, you must be on version 4.1.3 to use this feature.
If you do that, is it working correctly? Let me know
If you want to open a song on the Aeros using MIDI song select you must enable the MIDI Song Select setting in the song settings by editing the song
Then you must set both the MSB and PC values that will open the song, and hit save.
Then once the song has a MIDI ID associated with it, all you have to do is send one MSB (CC:0) command and one PC command, in that order, to open it.
CC:0 represents MSB
CC:0 value 0 is MSB 0
CC:0 value 127 is MSB 127
If I want a song to open to MSB 1 and PC 5, on my MIDI controller I would send CC:0 value 1 followed by a PC 5 command on the same button press.
I cannot really be more clear than the steps in the post, if you need more one on one help please reach out to support@singularsound.com