Was this a project of your own choosing or did your instructor assign it as a class project? If I had known that this project was homework I would have taken a very different approach to assisting you. We don't do students homework here on AAC but we will provide guidance.
The odds that the ebay module activates playback by a logic low (pulling the 'Play' pin to ground) is very likely. If that's the case you will only need a blocking diode connected from the collector of Q1 (LED Driver) to the play pin on the sound board.
Chris
The odds that the ebay module activates playback by a logic low (pulling the 'Play' pin to ground) is very likely. If that's the case you will only need a blocking diode connected from the collector of Q1 (LED Driver) to the play pin on the sound board.
Chris