If you are looking to send mp3s on WhatsApp, there are a few things you need to know. First, WhatsApp does not support mp3s in its own app. You will need to use a third-party app like VLC or MP3splice to send mp3s. Second, WhatsApp does not support background music when sending mp3s. You will need to use an audio player like Spotify or Apple Music to listen to your mp3s while they are being sent. Finally, if you want to include a video with your mp3s, you will need to use the YouTube app and add the video URL into the text field of the WhatsApp message.
