I made that mistake once.. and I'll admit it.. but I didn't sell it so it was overlooked, but later notified the manufacturer. Like I had said it wasn't sold. So nothing became of it, which doesn't make it 100% right either.
PLEASE>>>> ALWAYS seek permission before recording a DEMO for Distribution that will be copied to another media. even if it's ONE copy!!! NO MATTER THE COST!! It will save the headaches later. I can guarrentee that from expierence.