Select “File” in the Apple menu at the top of the screen, then choose “Import”. Locate the downloaded YouTube file or folder, click “Open”. If you add the entire folder, all the files can be transferred to the library immediately. Once done, press “File” > “Update Cloud Library” to add YouTube to Apple Music cloud collection. 2. Online video converter with MP4 to MP3 tool. A web service is a great video to MP3 online converter. Such platforms provide a simple and user-friendly way to get the job done without the need to install a specific app to convert a video to audio on iPhone. This is how to use another online service - Free Convert. The conversion will start in no instant and the MP3 version will display under the original track. STEP 6. Plug the microSD card into your computer and copy & paste Apple Music in mp3 format to it. STEP 7. Insert the microSD card back into your MP3 player and you'll now be able to enjoy Apple Music offline. Method 2. Video to MP3 Converter is the best audio cutter and video to mp3 converter tool. It’s simple, powerful, and totally FREE. Features: - Simple user interface. - Video Cutter, Audio Cutter & converter. - Supports various types of audio (MP3, M4A, WAV, AAC, AIF, CAF) - Fast video conversion. - Play, share and manage your converted files. PEqP03.