What did he mean when he opened the audio novel and it jumped out in less than two seconds?

I'm not sure which audio novel you're referring to. Maybe it's because of copyright issues or other restrictions. However, generally speaking, audio novels needed the permission of the copyright owner before they could be played. Unauthorized playback could be pursued by the law. If you wish to play an audio novel, you are advised to contact the relevant copyright owner or broadcast platform to obtain authorization and play it.