Is FLAC free to use?

Inquiring minds want to know: Is FLAC, the Free Lossless Audio Codec, truly free to use? For those seeking to compress their audio files without sacrificing quality, FLAC has long been a popular choice. But does its name accurately reflect its licensing status? Many codecs and software packages require paid licenses for commercial use, but FLAC claims to be an open source solution. Is this merely a marketing ploy, or can anyone, from amateurs to professionals, truly utilize FLAC without incurring any financial obligation? Clarifying this matter is crucial for those considering FLAC for their audio needs.