I'm using the SamplerBox quiet while and I really apreciate the time you spend on it!
That's why I want to share some ideas for the developement.
There are two things that would be awesome:
1.:I've read that somewhere in the Forum before. Just adding different Channels so multiple midi devices can play different instruments.
2.:Maybe a small GUI like the Korg Kronos. You see the different Instruments in a grid of square and clicking on the squares (touchscreen) chooses the Instrument you want.