Spray your slow cooker crock with non-stick spray.
Add all ingredients except meatballs.
Stir to mix well.
Stir the meatballs into the sauce after adding them.
Cook for 4-5 hours on low in the slow cooker.
When the sauce is almost done, bring a large pot of water to a boil. Once the water is boiling, add your pasta and cook to whatever the instructions on the pasta packaging state should be used for al dente (cooked but still a little firm).
Drain.
To serve, place a serving of pasta on a plate, add sauce and meatballs, and sprinkle with grated parmesan-romano cheese.