Are the stories just digital?

Yes. All the stories are in mp3 format.

How can I play the stories?

The stories will play on any media player - in a mobile phone, tablet, iPad, computer.

How can I play the stories in the car?

You can connect your mobile phone or device to your car stereo via Bluetooth. Bluetooth is a standard feature in practically all car stereos nowadays. And then open the mp3s in any media player - again, all smartphones have default media players where our stories will play.