This phrase refers to a specific type of online service. It facilitates the acquisition of audio files, specifically in the MP3 format, from video content hosted on YouTube. The service identified in the phrase allows users to extract the audio portion of a YouTube video and save it as an MP3 file for offline listening.
The popularity of these services stems from the desire to access audio content independent of YouTube’s platform. Users may find them beneficial for creating personalized music libraries, listening to podcasts offline, or archiving audio from lectures and presentations. Historically, the availability of such tools has raised copyright concerns, as unauthorized downloading may infringe upon the rights of content creators.