A CC license is a floor, not a ceiling — the original creator can always grant additional permissions beyond it
Creative Commons licenses are non-exclusive: they grant a minimum set of rights to the public, but the creator retains copyright and can grant broader permissions to anyone who asks. This means a CC-BY-NC sound uploader can privately agree to let a commercial producer use their sound in a for-profit project — the CC-BY-NC terms apply to everyone by default, but the creator can override them for a specific person. For Freesound users, this means that even a CC-BY-NC or Sampling+ sound is not permanently off-limits for commercial work: contacting the uploader and requesting permission is always an option. A common misconception is that the CC license is the only mechanism available; in fact it is merely the default grant.
Examples
A game developer wants to use a CC-BY-NC synth pad in a commercial release. They message the Freesound uploader, explain the use case, and receive a private email permission for that specific project. This is valid even though the CC label on the page still says NC.
Assessment
Under what circumstances can a producer legally use a CC-BY-NC Freesound sound in a commercial project? What must they obtain, and from whom?