I want to have 6 jack audio IN waiting for connection to start some WAV/OGG playback as soon as a headphone plugs in. In fact I'd like to have simultaneous playback in 6 lines. I've seen in the market some stuff that you can add buttons to different actions (play, pause, stop, etc). So far I believe this might be possible and affordable with Adafruit's Audio FX (which are stand-alones arduino-programmable wav/ogg decoder circuits).

But,

Is it possible to start audio playback when headphones gets plugged in? HOW?

Is that an event? like pressing a button? Does it need some "hacking" between GND lines maybe? :/

I want to have 6 audio jacks IN waiting for connection to start some WAV/OGG playback as soon as a headphone plugs in. In fact, I'd like to have simultaneous playback in 6 lines. 

I've seen in the market some stuff that you can add buttons to different actions (play, pause, stop, etc). So far I believe this might be possible and affordable with Adafruit's Audio FX (which are stand-alone, Arduino-programmable WAV/OGG decoder circuits).

But,

Is it possible to start audio playback when headphones gets plugged in? HOW?

Is that an event? like pressing a button?

Does it need some "hacking" between GND lines maybe?

I want to have 6 jack audio IN waiting for connection to start some WAV/OGG playback as soon as a headphone plugs in. In fact I'd like to have simultaneous playback in 6 lines. I've seen in the market some stuff that you can add buttons to different actions (play, pause, stop, etc). So far I believe this might be possible and affordable with Adafruit's Audio FX (which are stand-alones arduino-programmable wav/ogg decoder circuits).

But,

Is it possible to start audio playback when headphones gets plugged in?

Is that an event? like pressing a button? Does it need some "hacking" between GND lines maybe? :/

I want to have 6 jack audio IN waiting for connection to start some WAV/OGG playback as soon as a headphone plugs in. In fact I'd like to have simultaneous playback in 6 lines. I've seen in the market some stuff that you can add buttons to different actions (play, pause, stop, etc). So far I believe this might be possible and affordable with Adafruit's Audio FX (which are stand-alones arduino-programmable wav/ogg decoder circuits).

But,

Is it possible to start audio playback when headphones gets plugged in? HOW?

Is that an event? like pressing a button? Does it need some "hacking" between GND lines maybe? :/