Here is a Sample Audio Fetched From :- https://github.com/INDIESTUFF/audios/blob/main/tags/About-Me.mp3

You are Getting Unlimited Audio Storage Here

Even if you delete your audio from GitHub, your audio will still be saved

Just Generate code from Here and you will get Unlimited bandwidth and Storage for Your Audio File

You Can Also Modify the height and width of iframe According to your Website.