The creative commons licence limits the actual software, not the products made with it. Someone can't, for example, take the Paint.NET source code and change it, then turn around and sell it.
I haven't seen any licence that says the program can't be used to make commercial products, and that'd be silly, because programs are made to be used by people, including commercial users. Also, I never sold anything. I work for the company and there was no payment for the product, and as far as I know, that's not covered by the non-commercial clause. It means to sell the remixed works, and like I said, it doens't apply to the works made with the program, but rather works derived from the program.
Also, that makes me wonder why Share-Alike has been included in that licence? Someone could remix it, release it under a commercial-possible licence, and then someone else could remix that and sell it. Though I'm not sure if the original works is still covered.