Yes, I spoke to the person the other day. They reminded me about a karaoke film - Duets. It would be a nice one to show at some point. It is about the desperate lives of karaoke hustlers in the mid-west. There is one memorable line: I am a little short of money right now, but I would consider it an honour to suck your cock.
We could get more CDG/DVD discs. Perhaps our DVD player can cope with CDGs. If not, we will have the player for the night, so can use them. If this is a success, then we can collect our own discs and get a CGD player.
I'm looking in to making my own CDGs/DVDs. CDGs are made from MP3+G - a normal MP3 file with pixel data hidden inside it. I can remove/minimise the vocals from a lot of normal songs. Most songs have the vocals in the centre, so you can split the stereo track and invert one channel so that anything common to both is canceled out. So, we shouldn't be stuck with the bog standard singalongs.