The sound selection is within the DSP: there's no high-bandwidth path to the DSP, as it was designed to be used with the average microcontroller you find in a car radio :(

There's a possibility we could get visuals on line-in, it's just the sound input via line-in is more a by-product than a design feature and has never been tried :)

It's not high on our to-do list, but we'll get to it when the more important things have been done.

Hugo