The software saved files in the proprietary .kfn format. This was essentially a zip file containing the audio, the lyrics, the background images, and the configuration. It was a neat, self-contained package that was easy to share with friends or play on the KaraFun Player.
For modern karaoke creation, there are newer tools and AI software that can sync lyrics automatically. But for those who learned the ropes on 1.20, nothing beats the satisfaction of manually syncing that perfect chorus. karafun studio 1.20