KFN format

Friends, please add support for the KFN format in this player. It's going to be very cool. There are a lot of databases with songs in this format on the Internet. example:
https://disk.yandex.ru/d/9sUWXeuAmhG1Dw And it will also be cool if when you turn on the song, the video will automatically open in full screen.

Unfortunately, the kfn format is closed and therefore cannot be read by third party software.