Hey guys, I'm still stuck on this. I've narrowed the problem down to these 3 lines:
AudioConnection patchCord1(i2s1, 0, mixer1, 0);
AudioConnection patchCord2(i2s1, 1, mixer1, 1);
AudioConnection patchCord3(mixer1, fft1024);
When they are commented out, the lights show perfectly. When just 1...