Pro Karaoke Problem

I'm having trouble with the ProKaraoke plug in. It's obviously designed to work with one line scrolling across the page, but I'm creating a dvd for elderly suffereds of dementia that shows a whole verse at a time but changes color from unsung text to sung text in time with the music. If I create a seperate "title" for each line the plug in works as it should, however as soon as I try pasting a verse in (having created a plain text document in TEXT EDIT) it seems to ignore the key frames. The text still changes color but not at the key frame that I have set. Does anyone have a solution.? This is a bit of a love job so I don't want to spend a lot of time on it if I can help.