The phrase refers to the practice of acquiring audio files in the MP3 format through online platforms or services that often aggregate content. These services typically allow users to search for, convert, and save audio from various online sources, primarily video streaming websites. As an example, a user might employ such a service to obtain an audio track from a music video hosted online.
The accessibility and convenience of such methods have contributed to its widespread use for building personal music libraries. Historically, these platforms emerged alongside the rise of digital music consumption and the popularity of streaming services. The perceived benefit lies in the ability to obtain audio content offline, potentially bypassing subscription fees or data usage associated with streaming.