If you're not selling it you should be fine. And even if you were selling it, you would have to sell a crap load (I'm talking 100,000 +) to even be noticed. It costs a lot of money for an artist to take you to court, and if you aren't making a lot of money then you most likely will stay under the radar. I'd only worry about sample clearance if you were signed to a major or well known indie label.
