Karaoke Program
I'm trying to figure out if its possible to build a type of karaoke program...
Something that colours words in a sliding motion according to the received input...
Yup, that's possible.
GREAT! How?
"How" what? A program like that will have a variety of different components, each requiring some amount of fine-tuning and cobbling together.
So by going through and figuring out each individual element your patch will need you'll have an easier time building it. There isn't a "karaoke" object - but there are text objects, video-player objects, ways to load in text, etc etc.
Sorry I can't build the patch for you as such :)