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This was my first thought, too. I'd be surprised if you set this up accidentally, but if OP shares that work/living space with another person, they might be playing a little prank.
I disagree that using it at work is a problem. By "noncommercial" they almost certainly mean that you can't use the feature to make money. Basically, they're saying you can't rent out access to your music library. It doesn't mean (IMO, I'm not a lawyer) that you can't use it outside your house.
