STK is cool! I'm building a synth plugin, so that's why I'm in JUCE...
I want to hear more about the remote visualizer! I was using Jim Credland's buffer debugger (again, JUCE)[1]. It pops open a window, making it fairly easy to visualize buffers with one caveat: you actually have to tell it about the buffers you care about visualizing and then recompile. This means debugging can't really be on the fly (unless you only always care about the same buffer or two).
The other issue I ran into was viewing audio from my tests. I'd love to hear about the shared memory approach — real waveforms would be ideal!
1. https://github.com/jcredland/juce-toys/blob/master/jcf_debug...