For years an absolute champion named CC created great karaoke tracks and kept a Mega archive updated monthly. The Mega link is dead now. If anyone knows a new location I’d appreciate a tip.
CC if you are reading this, and it’s all over, thanks for the good times. Your work was epic, and you really helped my karaoke parties.
I’ve been using Pikaraoke, which is FOSS, can run on a Raspberry pi, and using yt-dlp can add songs to the library from youtube on the fly. I’ve been very happy with it.