I have linux mint 19 installed when I load k3b it says I am missing k3b mad mp3 decoder and madmp3 decoding library apt can't find these items.
I tried libk3b2-mp3 it says I have libmad0
I also used apt to install brasero-common this was done but I can't locate the program
I have Asunder and ripperx installed.

How are you installing applications? I ask this because it sounds like you are installing application dependencies without actually installing the application. For example, "brasero-common" is not an application, but a dependency of "brasero".

What are you trying to install, k3b? If so, use Linux Mint's package manager, or software center, whatever it's called and install k3b, if it is available for the version of Mint you are running. If you want to install "brasero" instead, install "brasero, the application itself.

When you use a Linux distro's package manager to install an application, it will automatically install all required dependencies.

I fixed brasero I removed and used apt to reinstall.
I used apt install k3b
It works for regular files but won't for music cd

Just to be clear, brasero and k3b do the same thing. Are you trying to burn a music cd from audio files? If you used apt to install k3b, it should work because apt will pull in all needed dependencies.

You will need to provide more information about what doesn't work so someone can better troubleshoot. Provide log output or screenshots of error messages, etc.

apt install libk3b7-extra-codecs
This fixed the problem