Buenas, premiere pro, de pronto, no reproduce los videos dentro del programa

Delete the Media Cache and Media Cache files:
https://community.adobe.com/t5/premiere-pro/faq-how-to-clear-your-media-cache-in-30-seconds-in-premiere-pro-2020/m-p/11017257/thread-id/260446?page=1

If that doesn’t work, try updating or rolling back your graphics driver directly from the video card manufacturer’s site. If NVIDIA, do a clean installation of the latest Studio Driver (NOT the Game Driver).

If that doesn't work, try creating a new project and import the old one into it.

Hi jorge_antonio_9032,

Sorry to hear about this. Please share a screenshot of the Audio Hardware preferences window in Premiere Pro. It will help us diagnose the issue properly.

Thanks,

Sumeet