how to use button for sound with dfplayer?

i am trying to get a button to work with the dfplayer adapter but i don't know how to. i have tried putting voltage and ground to button and that to 5v and gnd but that does not work i want it to play a sound when i push the button and stop when i let go. anyone know how too?

This is how to wire up an input
http://www.thebox.myzen.co.uk/Tutorial/Inputs.html

You will see you have two choices one where a pus returns a HIGH and one where it returns a LOW. Use the latter but you might have to change your software to see the push correctly.

Have you read this: DFPlayer_Mini_SKU_DFR0299-DFRobot ?

You should be able to start and stop the audio easily using the standard library calls.