John,
Tried many examples of said software and it's all pretty crappy. Have you tried going into the Big W or music stores and buying actual CD Karaoke backing tracks? Obviously they don't provide on-screen lyrics etc. but are basically CD backing tracks and pretty good. What songs do you need? The US Walmart site used to do a good selction as well at 88c per song. Need a US CC though, however, I have an American friend (co-pilotong on Thursday) who has an account at Wallies, so if you can get a list to me of what you need, I'll see what I can do.
John