Are there any packages/apps/computer programs/other that offer karaoke of popular Jewish/Heimishe music?
Paging @YitzyS @Euclid
Don't think that I can be of much help, but I'll share what I have to offer:
1. There are select albums that are sold in a music-only version, like Benny Friedman's
Kol Haneshama and
Fill the World with Light, Mordechei Shapiro's
Kol Haderech, and Dovid Pearlman's
Miracles.
2. Many artists make their songs available upon request, which is common in camps and girl's high schools. (I once told a certain artist that I'm surprised one of his songs didn't make it as much as I thought it would, and he told me, 'You're kidding? I get requests for the music every day from girls high schools!')
3. Some audio editing programs claim to make songs into karaoke by removing any audio that is identical on both stereo tracks, though I've had very disappointing results when I tried.