micro:bit play raw sound file when radio message received

radioTriggersSound.py

from microbit import display, sleep, button_a, button_b
import audio, radio, os

def frames_from_file(sndfile, frame):
    while(sndfile.readinto(frame, 32) > 0):
        yield frame

def play_snd(fname):
    file_size = os.size(fname)
    frame = audio.AudioFrame()
    with open(fname, 'rb') as sndfile:
        audio.play(frames_from_file(sndfile, frame),wait=False)
        sleep(file_size / 7.8125)
        audio.stop()
    del frame

def roar():
    play_snd('clip.raw')

radio.config(group=138)
radio.on()
display.scroll('138')
display.show(')')

while True:
    incoming = radio.receive()
    if incoming is not None:
        display.show("!")
        roar()
        roar()
    if button_a.is_pressed():
        display.show('p')
        roar()
    if button_b.is_pressed():
        radio.send("roar")
        display.show(">")
        sleep(500)
    sleep(200)

simpler one is here https://gist.github.com/nbogie/4b2e68e1e4217862b358f232b9c38ece

modded to trigger on ANY radio message on that group, to make it easier to send from a makecode-programmed micro:bit, as those messages have extra headers on them.
See
https://support.microbit.org/support/solutions/articles/19000053168-receiving-radio-data-from-the-javascript-blocks-editor-within-python

modded to use a different radio group rather than group zero, to make it less likely that another nearby project will trigger it (given it now currently doesn't care WHAT message it gets)