I'm thinking more along the lines of it being a current hardware system, still sold in shops. But then, they've never done anything about the numerous DS emulators, so I guess you're right.
It does sound exactly like lots of other bands, and I've never heard of this one. Still, it is easy to listen to, no problem with that. I'd be happy to let it play while doing some work or whatever.
You mean kinst2.chd? Put it into it's own kinst2 folder. Oh, you're using mame32k which is incredibly ancient. The chd was different then, you may have a hard time finding the right version.