SFX Module Installation

I have a few of the SFX wired up in the car like the Turboboost sound, K.I.T.T.s introduction and the two Knight Rider themes (Narrated and Un-Narrated). The Turboboost SFX is connected to my switch pods Turboboost button and the other two or I should say 3 SFX are connected to my Space Matt buttons. The two Knight Rider themes are on the same SFX pin on the Adafruit board so they are hooked up to one button.

After hooking up those few SFX out in the car and giving it a test I did notice something unusual that happens, the SFX all play fine when the buttons are pressed but while the SFX is playing if you hit another button the SFX stops or seems to reset, which is odd considering I have not yet connected up the reset pin wire. I have a hunch that I may need to add in some rectifier diodes into my wiring scheme and see if that cures the issue. I think my SFX module might be getting some kind of signal backwash from the other buttons so I'm hoping that the diodes should correct that. I'll do some experimenting today and see. lol it's funny how things work awesome on the bench until you actually install it into the car along with all the other electronics and then discover annoying little issues like this ;)