How can I separately edit audio & video data?

[ddouglass]

I know that some of the people in here have used CDGFix to edit the graphics part after separation, but I also know it can be a difficult process to learn how to do it. Because it is actually graphics and not text, then it requires altering the graphics commands instead of just retyping the text.
As Jahern said Songverter can convert most formats including Hoster KMA files to other formats, so that will solve that part.