This is the one I had on hand.. and was attempting to use:
http://sensorkit.en.joy-it.net/index.php?title=KY-038_Microphone_sound_sensor_module
I basically have everything done/coded... but the sensor is just a bit 'janky'...
I'll see if I get a video up tonight.
I'll post what I used.....
Arduino Pro-Mini ($2.00)
DFPlayer mini ($2.00)
KY-038 sound sensors ($2.00)
Some jumper wires
Few caps and resistors
External pot (for testing) to see external analog threshold value settings helps
Firmware/code
+5v voltage regulator ($1.00)
(total costs are very cheap)
I added an outside pot to allow setting of an analog value threshold.. so you can tweak the sensitivity on it yourself.......
* (not sure it works any better than the built in pot for the digital pin state)