I just received a couple of Adafruit Circuit Playground boards. After digging through their library I found out that the neopixels on it are on pin 17.
A quick test with a confetti program worked with no problems.
The “Neopixel” leds on this board are actually SK6812-3535 leds
interesting board with lots of sensors
My guess is that the board has a different set of pin to port mappings that I need to put into place.
It uses the same chip as the adafruit flora, setting the data pin to 17 worked fine.
Ah - sorry - misread your post - thought the program wasn’t working 
It worked fine, even with fastled and their library for everything on the board included. It did seems like it does not compile parts that are not used in the program. I will do more experiments later.
Can confirm! The soundMems code works especially well on the little ACP if you #define LED_DT 17, #define COLOR_ORDER GRB, #define LED_TYPE WS2811, #define NUM_LEDS 10, #define MIC_PIN 4 and #define DC_OFFSET 5 (the last one is more of an appearance thing…default is 0). Add some diffusion and it’s a great little music visualizer!