Latest developments:
Karaoke MONSTER's server is coming together decently well. There's one or two more items that need to be finished before we'll be able to do our first Karaoke MONSTER night.
(Maybe the next big operation for KM is to make a IDOL MONSTER, where a 3d anime character is mocapped onto a stage.... hmm...)
It looks like there might be multiple play modes in Karaoke MONSTER. One of them is going to be a "Karaoke Party" system, where everyone queues up and takes turns singing while everyone listens.
I think another one might just be open play mode, where anyone can play any song at any time, and people can choose which song they want to listen to. I'm not really 100% sure on the mechanics yet ...
One other mode that might be worth pursuing is the private recording mode, where you can just sing and not broadcast it out for all to hear. It's an idea...
and yes, once you're online, you don't have to actually sing. You can just listen in.