What I use on Linux is a program called EasyTAG. It’s a powerful, free tool for setting tags on a variety of file types. I believe they have a windows version as well.
http://easytag.sourceforge.net/
EasyTag is another good program, but it, too, is geared to building collections rather than creating new mp3s. It doesn’t address the issue of the copyright bit.
I am beginning to wonder if I am banging my head against a brick wall. Anyways, thanks for your help!