I'm out of touch with what is around and Easyabc seems popular.

I guess one thing you could try is to update abcm2ps. I'm not sure as to it's active development status these days but possibly the best place to look is http://abcplus.sourceforge.net/ where Guido Gonzato has maintained binaries for the latest versions. Another alternative would be to try to compile from source but that is more likely to be a method for Linux users and I'm assuming you are on Windows.