Even if you download audio that is not copyrighted, you may still breach your contract with the platform. According to YouTube's Terms of Service , users are explicitly prohibited from accessing, reproducing, downloading, distributing, or transmitting any content unless: It is expressly authorized by the service.

YouTube provides an explicit download button or link for that specific content.

However, the legal landscape surrounding this topic depends entirely on copyright status, platform contract rules, and how you intend to use the audio. Copyright Law vs. YouTube Terms of Service

Under the US Copyright Act and international copyright treaties, the creator or rights holder possesses exclusive control over the reproduction and distribution of their audio. Converting a video containing copyrighted material (such as commercial music, movie clips, or proprietary podcasts) into an offline MP3 file constitutes unauthorized reproduction. Doing so without a proper license or explicit permission is an act of copyright infringement. 2. The Contractual Framework: YouTube’s Terms of Service