I’ve mentioned before the Music Browing and Midi Controls are terrible with the default mapping on the SX2.
My biggest gripe is that one you have added a song to the queue there is absolutely no way of navigating back to the queue using the controller commands alone!!
I’ve managed to remap quite a few of the commands so the SX2 performs better with the Midi commands for the music browser but the lack of some commands in the list of selectable Midi commands is unfathomable.
Some of the available commands that look ‘promising’, perform absolutely no function at all when programmed and pressed.
As I said, I’ve brought this up before but nothing has changed so good luck, hope you get better success than I did.