Questions about availability of karaoke tracks

[waynec]

This posting will expose my ignorance but here goes anyway. I have several questions.

1. Is there anywhere on the Net where I can BUY karaoke tracks? Yes, I only want legitimate tracks that I pay for.

2. If available, and not in CDG format, can they be converted to CDG?

3. If they can be converted, what are programs that will do it?

Thanks.